Home / 31,414.64-43,354.68-17,990.12

Finding the Fourth Proportional to 31,414.64, 43,354.68 and 17,990.12

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Solution

The fourth proportional to 31,414.64, 43,354.68 and 17,990.12 is: 24,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,414.64 : 43,354.68 = 17,990.12 : x
  2. Step 2: Convert to fraction form
    31,414.64/43,354.68 = 17,990.12/x
  3. Step 3: Cross multiply
    31,414.64x = 43,354.68 × 17,990.12
  4. Step 4: Simplify right side
    31,414.64x = 779,955,895.76
  5. Step 5: Solve for x
    x = 779,955,895.76/31,414.64
  6. Step 6: Final answer
    x = 24,827.78

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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.