Home / 15,614.70-21,516.40-11,128.92

Finding the Fourth Proportional to 15,614.70, 21,516.40 and 11,128.92

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Solution

The fourth proportional to 15,614.70, 21,516.40 and 11,128.92 is: 15,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.70 : 21,516.40 = 11,128.92 : x
  2. Step 2: Convert to fraction form
    15,614.70/21,516.40 = 11,128.92/x
  3. Step 3: Cross multiply
    15,614.70x = 21,516.40 × 11,128.92
  4. Step 4: Simplify right side
    15,614.70x = 239,454,294.29
  5. Step 5: Solve for x
    x = 239,454,294.29/15,614.70
  6. Step 6: Final answer
    x = 15,335.18

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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.