Home / 20,132.06-27,781.30-11,180.12

Finding the Fourth Proportional to 20,132.06, 27,781.30 and 11,180.12

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Solution

The fourth proportional to 20,132.06, 27,781.30 and 11,180.12 is: 15,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.06 : 27,781.30 = 11,180.12 : x
  2. Step 2: Convert to fraction form
    20,132.06/27,781.30 = 11,180.12/x
  3. Step 3: Cross multiply
    20,132.06x = 27,781.30 × 11,180.12
  4. Step 4: Simplify right side
    20,132.06x = 310,598,267.76
  5. Step 5: Solve for x
    x = 310,598,267.76/20,132.06
  6. Step 6: Final answer
    x = 15,428.04

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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.