Home / 21,472.34-29,618.19-15,512.76

Finding the Fourth Proportional to 21,472.34, 29,618.19 and 15,512.76

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Solution

The fourth proportional to 21,472.34, 29,618.19 and 15,512.76 is: 21,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.34 : 29,618.19 = 15,512.76 : x
  2. Step 2: Convert to fraction form
    21,472.34/29,618.19 = 15,512.76/x
  3. Step 3: Cross multiply
    21,472.34x = 29,618.19 × 15,512.76
  4. Step 4: Simplify right side
    21,472.34x = 459,459,873.10
  5. Step 5: Solve for x
    x = 459,459,873.10/21,472.34
  6. Step 6: Final answer
    x = 21,397.76

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Half scale
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Double scale
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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.