Home / 22,472.56-30,988.20-15,387.76

Finding the Fourth Proportional to 22,472.56, 30,988.20 and 15,387.76

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Solution

The fourth proportional to 22,472.56, 30,988.20 and 15,387.76 is: 21,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,472.56 : 30,988.20 = 15,387.76 : x
  2. Step 2: Convert to fraction form
    22,472.56/30,988.20 = 15,387.76/x
  3. Step 3: Cross multiply
    22,472.56x = 30,988.20 × 15,387.76
  4. Step 4: Simplify right side
    22,472.56x = 476,838,984.43
  5. Step 5: Solve for x
    x = 476,838,984.43/22,472.56
  6. Step 6: Final answer
    x = 21,218.72

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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.