Home / 12,979.68-17,909.28-8,262.24

Finding the Fourth Proportional to 12,979.68, 17,909.28 and 8,262.24

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Solution

The fourth proportional to 12,979.68, 17,909.28 and 8,262.24 is: 11,400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.68 : 17,909.28 = 8,262.24 : x
  2. Step 2: Convert to fraction form
    12,979.68/17,909.28 = 8,262.24/x
  3. Step 3: Cross multiply
    12,979.68x = 17,909.28 × 8,262.24
  4. Step 4: Simplify right side
    12,979.68x = 147,970,769.59
  5. Step 5: Solve for x
    x = 147,970,769.59/12,979.68
  6. Step 6: Final answer
    x = 11,400.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.