Home / 20,764.54-28,654.17-11,810.78

Finding the Fourth Proportional to 20,764.54, 28,654.17 and 11,810.78

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Solution

The fourth proportional to 20,764.54, 28,654.17 and 11,810.78 is: 16,298.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.54 : 28,654.17 = 11,810.78 : x
  2. Step 2: Convert to fraction form
    20,764.54/28,654.17 = 11,810.78/x
  3. Step 3: Cross multiply
    20,764.54x = 28,654.17 × 11,810.78
  4. Step 4: Simplify right side
    20,764.54x = 338,428,097.95
  5. Step 5: Solve for x
    x = 338,428,097.95/20,764.54
  6. Step 6: Final answer
    x = 16,298.37

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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.