Home / 12,279.62-18,422.68-4,488.50

Finding the Fourth Proportional to 12,279.62, 18,422.68 and 4,488.50

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Solution

The fourth proportional to 12,279.62, 18,422.68 and 4,488.50 is: 6,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.62 : 18,422.68 = 4,488.50 : x
  2. Step 2: Convert to fraction form
    12,279.62/18,422.68 = 4,488.50/x
  3. Step 3: Cross multiply
    12,279.62x = 18,422.68 × 4,488.50
  4. Step 4: Simplify right side
    12,279.62x = 82,690,199.18
  5. Step 5: Solve for x
    x = 82,690,199.18/12,279.62
  6. Step 6: Final answer
    x = 6,733.94

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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.