Home / 21,691.52-29,934.86-12,260.68

Finding the Fourth Proportional to 21,691.52, 29,934.86 and 12,260.68

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Solution

The fourth proportional to 21,691.52, 29,934.86 and 12,260.68 is: 16,920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.52 : 29,934.86 = 12,260.68 : x
  2. Step 2: Convert to fraction form
    21,691.52/29,934.86 = 12,260.68/x
  3. Step 3: Cross multiply
    21,691.52x = 29,934.86 × 12,260.68
  4. Step 4: Simplify right side
    21,691.52x = 367,021,739.30
  5. Step 5: Solve for x
    x = 367,021,739.30/21,691.52
  6. Step 6: Final answer
    x = 16,920.06

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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.