Home / 18,290.85-27,437.28-5,142.18

Finding the Fourth Proportional to 18,290.85, 27,437.28 and 5,142.18

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Solution

The fourth proportional to 18,290.85, 27,437.28 and 5,142.18 is: 7,713.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.85 : 27,437.28 = 5,142.18 : x
  2. Step 2: Convert to fraction form
    18,290.85/27,437.28 = 5,142.18/x
  3. Step 3: Cross multiply
    18,290.85x = 27,437.28 × 5,142.18
  4. Step 4: Simplify right side
    18,290.85x = 141,087,432.47
  5. Step 5: Solve for x
    x = 141,087,432.47/18,290.85
  6. Step 6: Final answer
    x = 7,713.55

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Similar ratio
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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.