Home / 15,476.04-21,340.78-9,187.20

Finding the Fourth Proportional to 15,476.04, 21,340.78 and 9,187.20

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Solution

The fourth proportional to 15,476.04, 21,340.78 and 9,187.20 is: 12,668.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.04 : 21,340.78 = 9,187.20 : x
  2. Step 2: Convert to fraction form
    15,476.04/21,340.78 = 9,187.20/x
  3. Step 3: Cross multiply
    15,476.04x = 21,340.78 × 9,187.20
  4. Step 4: Simplify right side
    15,476.04x = 196,062,014.02
  5. Step 5: Solve for x
    x = 196,062,014.02/15,476.04
  6. Step 6: Final answer
    x = 12,668.75

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Half scale
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Double scale
Find fourth proportional to 15,477.04, 21,342.16 and 9,188.20
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.