Home / 18,279.74-27,419.49-5,132.12

Finding the Fourth Proportional to 18,279.74, 27,419.49 and 5,132.12

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Solution

The fourth proportional to 18,279.74, 27,419.49 and 5,132.12 is: 7,698.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.74 : 27,419.49 = 5,132.12 : x
  2. Step 2: Convert to fraction form
    18,279.74/27,419.49 = 5,132.12/x
  3. Step 3: Cross multiply
    18,279.74x = 27,419.49 × 5,132.12
  4. Step 4: Simplify right side
    18,279.74x = 140,719,975.92
  5. Step 5: Solve for x
    x = 140,719,975.92/18,279.74
  6. Step 6: Final answer
    x = 7,698.14

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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.