Home / 31,747.60-47,560.92-19,720.72

Finding the Fourth Proportional to 31,747.60, 47,560.92 and 19,720.72

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Solution

The fourth proportional to 31,747.60, 47,560.92 and 19,720.72 is: 29,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747.60 : 47,560.92 = 19,720.72 : x
  2. Step 2: Convert to fraction form
    31,747.60/47,560.92 = 19,720.72/x
  3. Step 3: Cross multiply
    31,747.60x = 47,560.92 × 19,720.72
  4. Step 4: Simplify right side
    31,747.60x = 937,935,586.26
  5. Step 5: Solve for x
    x = 937,935,586.26/31,747.60
  6. Step 6: Final answer
    x = 29,543.51

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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.