Home / 31,471.28-43,431.40-17,325.20

Finding the Fourth Proportional to 31,471.28, 43,431.40 and 17,325.20

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Solution

The fourth proportional to 31,471.28, 43,431.40 and 17,325.20 is: 23,909.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,471.28 : 43,431.40 = 17,325.20 : x
  2. Step 2: Convert to fraction form
    31,471.28/43,431.40 = 17,325.20/x
  3. Step 3: Cross multiply
    31,471.28x = 43,431.40 × 17,325.20
  4. Step 4: Simplify right side
    31,471.28x = 752,457,691.28
  5. Step 5: Solve for x
    x = 752,457,691.28/31,471.28
  6. Step 6: Final answer
    x = 23,909.35

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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.