Home / 42,659.79-63,982.40-11,487.75

Finding the Fourth Proportional to 42,659.79, 63,982.40 and 11,487.75

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Solution

The fourth proportional to 42,659.79, 63,982.40 and 11,487.75 is: 17,229.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,659.79 : 63,982.40 = 11,487.75 : x
  2. Step 2: Convert to fraction form
    42,659.79/63,982.40 = 11,487.75/x
  3. Step 3: Cross multiply
    42,659.79x = 63,982.40 × 11,487.75
  4. Step 4: Simplify right side
    42,659.79x = 735,013,758.16
  5. Step 5: Solve for x
    x = 735,013,758.16/42,659.79
  6. Step 6: Final answer
    x = 17,229.66

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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.