Home / 20,926.54-28,878.15-11,494.90

Finding the Fourth Proportional to 20,926.54, 28,878.15 and 11,494.90

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Solution

The fourth proportional to 20,926.54, 28,878.15 and 11,494.90 is: 15,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.54 : 28,878.15 = 11,494.90 : x
  2. Step 2: Convert to fraction form
    20,926.54/28,878.15 = 11,494.90/x
  3. Step 3: Cross multiply
    20,926.54x = 28,878.15 × 11,494.90
  4. Step 4: Simplify right side
    20,926.54x = 331,951,446.44
  5. Step 5: Solve for x
    x = 331,951,446.44/20,926.54
  6. Step 6: Final answer
    x = 15,862.70

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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.