Home / 18,531.20-27,761.91-9,160.25

Finding the Fourth Proportional to 18,531.20, 27,761.91 and 9,160.25

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Solution

The fourth proportional to 18,531.20, 27,761.91 and 9,160.25 is: 13,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.20 : 27,761.91 = 9,160.25 : x
  2. Step 2: Convert to fraction form
    18,531.20/27,761.91 = 9,160.25/x
  3. Step 3: Cross multiply
    18,531.20x = 27,761.91 × 9,160.25
  4. Step 4: Simplify right side
    18,531.20x = 254,306,036.08
  5. Step 5: Solve for x
    x = 254,306,036.08/18,531.20
  6. Step 6: Final answer
    x = 13,723.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.