Home / 18,131.20-27,221.76-9,372.16

Finding the Fourth Proportional to 18,131.20, 27,221.76 and 9,372.16

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Solution

The fourth proportional to 18,131.20, 27,221.76 and 9,372.16 is: 14,071.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.20 : 27,221.76 = 9,372.16 : x
  2. Step 2: Convert to fraction form
    18,131.20/27,221.76 = 9,372.16/x
  3. Step 3: Cross multiply
    18,131.20x = 27,221.76 × 9,372.16
  4. Step 4: Simplify right side
    18,131.20x = 255,126,690.20
  5. Step 5: Solve for x
    x = 255,126,690.20/18,131.20
  6. Step 6: Final answer
    x = 14,071.14

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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.