Home / 20,108.57-27,753.15-11,158.96

Finding the Fourth Proportional to 20,108.57, 27,753.15 and 11,158.96

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Solution

The fourth proportional to 20,108.57, 27,753.15 and 11,158.96 is: 15,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.57 : 27,753.15 = 11,158.96 : x
  2. Step 2: Convert to fraction form
    20,108.57/27,753.15 = 11,158.96/x
  3. Step 3: Cross multiply
    20,108.57x = 27,753.15 × 11,158.96
  4. Step 4: Simplify right side
    20,108.57x = 309,696,273.38
  5. Step 5: Solve for x
    x = 309,696,273.38/20,108.57
  6. Step 6: Final answer
    x = 15,401.21

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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.