Home / 31,116.32-42,943.09-17,691.80

Finding the Fourth Proportional to 31,116.32, 42,943.09 and 17,691.80

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Solution

The fourth proportional to 31,116.32, 42,943.09 and 17,691.80 is: 24,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,116.32 : 42,943.09 = 17,691.80 : x
  2. Step 2: Convert to fraction form
    31,116.32/42,943.09 = 17,691.80/x
  3. Step 3: Cross multiply
    31,116.32x = 42,943.09 × 17,691.80
  4. Step 4: Simplify right side
    31,116.32x = 759,740,559.66
  5. Step 5: Solve for x
    x = 759,740,559.66/31,116.32
  6. Step 6: Final answer
    x = 24,416.14

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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.