Home / 20,731.57-31,073.01-9,614.86

Finding the Fourth Proportional to 20,731.57, 31,073.01 and 9,614.86

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Solution

The fourth proportional to 20,731.57, 31,073.01 and 9,614.86 is: 14,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.57 : 31,073.01 = 9,614.86 : x
  2. Step 2: Convert to fraction form
    20,731.57/31,073.01 = 9,614.86/x
  3. Step 3: Cross multiply
    20,731.57x = 31,073.01 × 9,614.86
  4. Step 4: Simplify right side
    20,731.57x = 298,762,640.93
  5. Step 5: Solve for x
    x = 298,762,640.93/20,731.57
  6. Step 6: Final answer
    x = 14,411.00

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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.