Home / 21,581.76-29,799.72-16,879.44

Finding the Fourth Proportional to 21,581.76, 29,799.72 and 16,879.44

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Solution

The fourth proportional to 21,581.76, 29,799.72 and 16,879.44 is: 23,306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.76 : 29,799.72 = 16,879.44 : x
  2. Step 2: Convert to fraction form
    21,581.76/29,799.72 = 16,879.44/x
  3. Step 3: Cross multiply
    21,581.76x = 29,799.72 × 16,879.44
  4. Step 4: Simplify right side
    21,581.76x = 503,002,585.76
  5. Step 5: Solve for x
    x = 503,002,585.76/21,581.76
  6. Step 6: Final answer
    x = 23,306.84

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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.