Home / 42,520.64-63,778.38-15,861.50

Finding the Fourth Proportional to 42,520.64, 63,778.38 and 15,861.50

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Solution

The fourth proportional to 42,520.64, 63,778.38 and 15,861.50 is: 23,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,520.64 : 63,778.38 = 15,861.50 : x
  2. Step 2: Convert to fraction form
    42,520.64/63,778.38 = 15,861.50/x
  3. Step 3: Cross multiply
    42,520.64x = 63,778.38 × 15,861.50
  4. Step 4: Simplify right side
    42,520.64x = 1,011,620,774.37
  5. Step 5: Solve for x
    x = 1,011,620,774.37/42,520.64
  6. Step 6: Final answer
    x = 23,791.29

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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.