Home / 20,101.13-27,740.19-11,149.46

Finding the Fourth Proportional to 20,101.13, 27,740.19 and 11,149.46

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Solution

The fourth proportional to 20,101.13, 27,740.19 and 11,149.46 is: 15,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.13 : 27,740.19 = 11,149.46 : x
  2. Step 2: Convert to fraction form
    20,101.13/27,740.19 = 11,149.46/x
  3. Step 3: Cross multiply
    20,101.13x = 27,740.19 × 11,149.46
  4. Step 4: Simplify right side
    20,101.13x = 309,288,138.80
  5. Step 5: Solve for x
    x = 309,288,138.80/20,101.13
  6. Step 6: Final answer
    x = 15,386.60

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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.