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Finding the Fourth Proportional to 42,462.88, 63,694.12 and 10,872.88

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Solution

The fourth proportional to 42,462.88, 63,694.12 and 10,872.88 is: 16,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,462.88 : 63,694.12 = 10,872.88 : x
  2. Step 2: Convert to fraction form
    42,462.88/63,694.12 = 10,872.88/x
  3. Step 3: Cross multiply
    42,462.88x = 63,694.12 × 10,872.88
  4. Step 4: Simplify right side
    42,462.88x = 692,538,523.47
  5. Step 5: Solve for x
    x = 692,538,523.47/42,462.88
  6. Step 6: Final answer
    x = 16,309.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.