Home / 31,119.48-42,945.80-17,691.30

Finding the Fourth Proportional to 31,119.48, 42,945.80 and 17,691.30

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Solution

The fourth proportional to 31,119.48, 42,945.80 and 17,691.30 is: 24,414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.48 : 42,945.80 = 17,691.30 : x
  2. Step 2: Convert to fraction form
    31,119.48/42,945.80 = 17,691.30/x
  3. Step 3: Cross multiply
    31,119.48x = 42,945.80 × 17,691.30
  4. Step 4: Simplify right side
    31,119.48x = 759,766,943.08
  5. Step 5: Solve for x
    x = 759,766,943.08/31,119.48
  6. Step 6: Final answer
    x = 24,414.51

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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.