Home / 42,010.90-62,997.90-12,431.04

Finding the Fourth Proportional to 42,010.90, 62,997.90 and 12,431.04

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Solution

The fourth proportional to 42,010.90, 62,997.90 and 12,431.04 is: 18,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,010.90 : 62,997.90 = 12,431.04 : x
  2. Step 2: Convert to fraction form
    42,010.90/62,997.90 = 12,431.04/x
  3. Step 3: Cross multiply
    42,010.90x = 62,997.90 × 12,431.04
  4. Step 4: Simplify right side
    42,010.90x = 783,129,733.43
  5. Step 5: Solve for x
    x = 783,129,733.43/42,010.90
  6. Step 6: Final answer
    x = 18,641.11

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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.