Home / 42,640.38-63,973.92-17,692.20

Finding the Fourth Proportional to 42,640.38, 63,973.92 and 17,692.20

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Solution

The fourth proportional to 42,640.38, 63,973.92 and 17,692.20 is: 26,543.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.38 : 63,973.92 = 17,692.20 : x
  2. Step 2: Convert to fraction form
    42,640.38/63,973.92 = 17,692.20/x
  3. Step 3: Cross multiply
    42,640.38x = 63,973.92 × 17,692.20
  4. Step 4: Simplify right side
    42,640.38x = 1,131,839,387.42
  5. Step 5: Solve for x
    x = 1,131,839,387.42/42,640.38
  6. Step 6: Final answer
    x = 26,543.84

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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.