Home / 14,008.78-20,989.82-11,517.65

Finding the Fourth Proportional to 14,008.78, 20,989.82 and 11,517.65

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Solution

The fourth proportional to 14,008.78, 20,989.82 and 11,517.65 is: 17,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.78 : 20,989.82 = 11,517.65 : x
  2. Step 2: Convert to fraction form
    14,008.78/20,989.82 = 11,517.65/x
  3. Step 3: Cross multiply
    14,008.78x = 20,989.82 × 11,517.65
  4. Step 4: Simplify right side
    14,008.78x = 241,753,414.81
  5. Step 5: Solve for x
    x = 241,753,414.81/14,008.78
  6. Step 6: Final answer
    x = 17,257.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.