Home / 31,665.28-43,695.12-17,517.64

Finding the Fourth Proportional to 31,665.28, 43,695.12 and 17,517.64

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Solution

The fourth proportional to 31,665.28, 43,695.12 and 17,517.64 is: 24,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.28 : 43,695.12 = 17,517.64 : x
  2. Step 2: Convert to fraction form
    31,665.28/43,695.12 = 17,517.64/x
  3. Step 3: Cross multiply
    31,665.28x = 43,695.12 × 17,517.64
  4. Step 4: Simplify right side
    31,665.28x = 765,435,381.92
  5. Step 5: Solve for x
    x = 765,435,381.92/31,665.28
  6. Step 6: Final answer
    x = 24,172.70

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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.