Home / 15,320.38-21,142.11-8,606.20

Finding the Fourth Proportional to 15,320.38, 21,142.11 and 8,606.20

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Solution

The fourth proportional to 15,320.38, 21,142.11 and 8,606.20 is: 11,876.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.38 : 21,142.11 = 8,606.20 : x
  2. Step 2: Convert to fraction form
    15,320.38/21,142.11 = 8,606.20/x
  3. Step 3: Cross multiply
    15,320.38x = 21,142.11 × 8,606.20
  4. Step 4: Simplify right side
    15,320.38x = 181,953,227.08
  5. Step 5: Solve for x
    x = 181,953,227.08/15,320.38
  6. Step 6: Final answer
    x = 11,876.55

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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.