Home / 30,287.18-41,772.58-19,680.26

Finding the Fourth Proportional to 30,287.18, 41,772.58 and 19,680.26

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Solution

The fourth proportional to 30,287.18, 41,772.58 and 19,680.26 is: 27,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.18 : 41,772.58 = 19,680.26 : x
  2. Step 2: Convert to fraction form
    30,287.18/41,772.58 = 19,680.26/x
  3. Step 3: Cross multiply
    30,287.18x = 41,772.58 × 19,680.26
  4. Step 4: Simplify right side
    30,287.18x = 822,095,235.27
  5. Step 5: Solve for x
    x = 822,095,235.27/30,287.18
  6. Step 6: Final answer
    x = 27,143.34

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Find fourth proportional to 15,143.59, 20,886.29 and 9,840.13
Half scale
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Double scale
Find fourth proportional to 30,288.18, 41,773.96 and 19,681.26
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.