Home / 42,630.15-63,945.36-13,047.87

Finding the Fourth Proportional to 42,630.15, 63,945.36 and 13,047.87

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Solution

The fourth proportional to 42,630.15, 63,945.36 and 13,047.87 is: 19,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,630.15 : 63,945.36 = 13,047.87 : x
  2. Step 2: Convert to fraction form
    42,630.15/63,945.36 = 13,047.87/x
  3. Step 3: Cross multiply
    42,630.15x = 63,945.36 × 13,047.87
  4. Step 4: Simplify right side
    42,630.15x = 834,350,744.38
  5. Step 5: Solve for x
    x = 834,350,744.38/42,630.15
  6. Step 6: Final answer
    x = 19,571.85

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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.