Home / 12,339.24-18,508.68-2,979.18

Finding the Fourth Proportional to 12,339.24, 18,508.68 and 2,979.18

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Solution

The fourth proportional to 12,339.24, 18,508.68 and 2,979.18 is: 4,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.24 : 18,508.68 = 2,979.18 : x
  2. Step 2: Convert to fraction form
    12,339.24/18,508.68 = 2,979.18/x
  3. Step 3: Cross multiply
    12,339.24x = 18,508.68 × 2,979.18
  4. Step 4: Simplify right side
    12,339.24x = 55,140,689.28
  5. Step 5: Solve for x
    x = 55,140,689.28/12,339.24
  6. Step 6: Final answer
    x = 4,468.73

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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.