Home / 38,615.96-53,295-21,626.66

Finding the Fourth Proportional to 38,615.96, 53,295 and 21,626.66

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Solution

The fourth proportional to 38,615.96, 53,295 and 21,626.66 is: 29,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,615.96 : 53,295 = 21,626.66 : x
  2. Step 2: Convert to fraction form
    38,615.96/53,295 = 21,626.66/x
  3. Step 3: Cross multiply
    38,615.96x = 53,295 × 21,626.66
  4. Step 4: Simplify right side
    38,615.96x = 1,152,592,844.70
  5. Step 5: Solve for x
    x = 1,152,592,844.70/38,615.96
  6. Step 6: Final answer
    x = 29,847.58

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Half scale
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Double scale
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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.