Home / 42,217.84-63,304.72-21,135.12

Finding the Fourth Proportional to 42,217.84, 63,304.72 and 21,135.12

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Solution

The fourth proportional to 42,217.84, 63,304.72 and 21,135.12 is: 31,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,217.84 : 63,304.72 = 21,135.12 : x
  2. Step 2: Convert to fraction form
    42,217.84/63,304.72 = 21,135.12/x
  3. Step 3: Cross multiply
    42,217.84x = 63,304.72 × 21,135.12
  4. Step 4: Simplify right side
    42,217.84x = 1,337,952,853.77
  5. Step 5: Solve for x
    x = 1,337,952,853.77/42,217.84
  6. Step 6: Final answer
    x = 31,691.65

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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.