Home / 31,121.73-42,946.26-17,691.12

Finding the Fourth Proportional to 31,121.73, 42,946.26 and 17,691.12

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Solution

The fourth proportional to 31,121.73, 42,946.26 and 17,691.12 is: 24,412.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.73 : 42,946.26 = 17,691.12 : x
  2. Step 2: Convert to fraction form
    31,121.73/42,946.26 = 17,691.12/x
  3. Step 3: Cross multiply
    31,121.73x = 42,946.26 × 17,691.12
  4. Step 4: Simplify right side
    31,121.73x = 759,767,439.21
  5. Step 5: Solve for x
    x = 759,767,439.21/31,121.73
  6. Step 6: Final answer
    x = 24,412.76

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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.