Home / 20,691.44-28,554.29-11,260

Finding the Fourth Proportional to 20,691.44, 28,554.29 and 11,260

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Solution

The fourth proportional to 20,691.44, 28,554.29 and 11,260 is: 15,538.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.44 : 28,554.29 = 11,260 : x
  2. Step 2: Convert to fraction form
    20,691.44/28,554.29 = 11,260/x
  3. Step 3: Cross multiply
    20,691.44x = 28,554.29 × 11,260
  4. Step 4: Simplify right side
    20,691.44x = 321,521,305.40
  5. Step 5: Solve for x
    x = 321,521,305.40/20,691.44
  6. Step 6: Final answer
    x = 15,538.86

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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.