Home / 42,540.59-63,820.11-12,957.65

Finding the Fourth Proportional to 42,540.59, 63,820.11 and 12,957.65

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Solution

The fourth proportional to 42,540.59, 63,820.11 and 12,957.65 is: 19,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.59 : 63,820.11 = 12,957.65 : x
  2. Step 2: Convert to fraction form
    42,540.59/63,820.11 = 12,957.65/x
  3. Step 3: Cross multiply
    42,540.59x = 63,820.11 × 12,957.65
  4. Step 4: Simplify right side
    42,540.59x = 826,958,648.34
  5. Step 5: Solve for x
    x = 826,958,648.34/42,540.59
  6. Step 6: Final answer
    x = 19,439.28

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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.