Home / 21,780.27-30,042.45-17,296.92

Finding the Fourth Proportional to 21,780.27, 30,042.45 and 17,296.92

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Solution

The fourth proportional to 21,780.27, 30,042.45 and 17,296.92 is: 23,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.27 : 30,042.45 = 17,296.92 : x
  2. Step 2: Convert to fraction form
    21,780.27/30,042.45 = 17,296.92/x
  3. Step 3: Cross multiply
    21,780.27x = 30,042.45 × 17,296.92
  4. Step 4: Simplify right side
    21,780.27x = 519,641,854.25
  5. Step 5: Solve for x
    x = 519,641,854.25/21,780.27
  6. Step 6: Final answer
    x = 23,858.38

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Similar ratio
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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.