Home / 20,691.56-31,013.03-9,574.77

Finding the Fourth Proportional to 20,691.56, 31,013.03 and 9,574.77

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Solution

The fourth proportional to 20,691.56, 31,013.03 and 9,574.77 is: 14,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.56 : 31,013.03 = 9,574.77 : x
  2. Step 2: Convert to fraction form
    20,691.56/31,013.03 = 9,574.77/x
  3. Step 3: Cross multiply
    20,691.56x = 31,013.03 × 9,574.77
  4. Step 4: Simplify right side
    20,691.56x = 296,942,629.25
  5. Step 5: Solve for x
    x = 296,942,629.25/20,691.56
  6. Step 6: Final answer
    x = 14,350.91

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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.