Home / 31,699.52-43,732.86-20,367.32

Finding the Fourth Proportional to 31,699.52, 43,732.86 and 20,367.32

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Solution

The fourth proportional to 31,699.52, 43,732.86 and 20,367.32 is: 28,098.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.52 : 43,732.86 = 20,367.32 : x
  2. Step 2: Convert to fraction form
    31,699.52/43,732.86 = 20,367.32/x
  3. Step 3: Cross multiply
    31,699.52x = 43,732.86 × 20,367.32
  4. Step 4: Simplify right side
    31,699.52x = 890,721,154.14
  5. Step 5: Solve for x
    x = 890,721,154.14/31,699.52
  6. Step 6: Final answer
    x = 28,098.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.