Home / 42,138.89-63,217.74-15,843.86

Finding the Fourth Proportional to 42,138.89, 63,217.74 and 15,843.86

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Solution

The fourth proportional to 42,138.89, 63,217.74 and 15,843.86 is: 23,769.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.89 : 63,217.74 = 15,843.86 : x
  2. Step 2: Convert to fraction form
    42,138.89/63,217.74 = 15,843.86/x
  3. Step 3: Cross multiply
    42,138.89x = 63,217.74 × 15,843.86
  4. Step 4: Simplify right side
    42,138.89x = 1,001,612,705.99
  5. Step 5: Solve for x
    x = 1,001,612,705.99/42,138.89
  6. Step 6: Final answer
    x = 23,769.32

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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.