Home / 18,427.20-27,645.10-5,279.21

Finding the Fourth Proportional to 18,427.20, 27,645.10 and 5,279.21

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Solution

The fourth proportional to 18,427.20, 27,645.10 and 5,279.21 is: 7,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.20 : 27,645.10 = 5,279.21 : x
  2. Step 2: Convert to fraction form
    18,427.20/27,645.10 = 5,279.21/x
  3. Step 3: Cross multiply
    18,427.20x = 27,645.10 × 5,279.21
  4. Step 4: Simplify right side
    18,427.20x = 145,944,240.62
  5. Step 5: Solve for x
    x = 145,944,240.62/18,427.20
  6. Step 6: Final answer
    x = 7,920.05

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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.