Home / 18,138.20-27,207.48-5,488.06

Finding the Fourth Proportional to 18,138.20, 27,207.48 and 5,488.06

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Solution

The fourth proportional to 18,138.20, 27,207.48 and 5,488.06 is: 8,232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.20 : 27,207.48 = 5,488.06 : x
  2. Step 2: Convert to fraction form
    18,138.20/27,207.48 = 5,488.06/x
  3. Step 3: Cross multiply
    18,138.20x = 27,207.48 × 5,488.06
  4. Step 4: Simplify right side
    18,138.20x = 149,316,282.69
  5. Step 5: Solve for x
    x = 149,316,282.69/18,138.20
  6. Step 6: Final answer
    x = 8,232.14

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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.