Home / 20,791.71-31,171.14-10,925.64

Finding the Fourth Proportional to 20,791.71, 31,171.14 and 10,925.64

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Solution

The fourth proportional to 20,791.71, 31,171.14 and 10,925.64 is: 16,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.71 : 31,171.14 = 10,925.64 : x
  2. Step 2: Convert to fraction form
    20,791.71/31,171.14 = 10,925.64/x
  3. Step 3: Cross multiply
    20,791.71x = 31,171.14 × 10,925.64
  4. Step 4: Simplify right side
    20,791.71x = 340,564,654.03
  5. Step 5: Solve for x
    x = 340,564,654.03/20,791.71
  6. Step 6: Final answer
    x = 16,379.83

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1.5x scale

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.