Home / 15,397.68-21,248.78-8,324.09

Finding the Fourth Proportional to 15,397.68, 21,248.78 and 8,324.09

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Solution

The fourth proportional to 15,397.68, 21,248.78 and 8,324.09 is: 11,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.68 : 21,248.78 = 8,324.09 : x
  2. Step 2: Convert to fraction form
    15,397.68/21,248.78 = 8,324.09/x
  3. Step 3: Cross multiply
    15,397.68x = 21,248.78 × 8,324.09
  4. Step 4: Simplify right side
    15,397.68x = 176,876,609.25
  5. Step 5: Solve for x
    x = 176,876,609.25/15,397.68
  6. Step 6: Final answer
    x = 11,487.22

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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.