Home / 20,691.73-28,554.53-11,260.29

Finding the Fourth Proportional to 20,691.73, 28,554.53 and 11,260.29

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Solution

The fourth proportional to 20,691.73, 28,554.53 and 11,260.29 is: 15,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.73 : 28,554.53 = 11,260.29 : x
  2. Step 2: Convert to fraction form
    20,691.73/28,554.53 = 11,260.29/x
  3. Step 3: Cross multiply
    20,691.73x = 28,554.53 × 11,260.29
  4. Step 4: Simplify right side
    20,691.73x = 321,532,288.61
  5. Step 5: Solve for x
    x = 321,532,288.61/20,691.73
  6. Step 6: Final answer
    x = 15,539.17

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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.