Home / 20,076.92-27,705-11,123.90

Finding the Fourth Proportional to 20,076.92, 27,705 and 11,123.90

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Solution

The fourth proportional to 20,076.92, 27,705 and 11,123.90 is: 15,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.92 : 27,705 = 11,123.90 : x
  2. Step 2: Convert to fraction form
    20,076.92/27,705 = 11,123.90/x
  3. Step 3: Cross multiply
    20,076.92x = 27,705 × 11,123.90
  4. Step 4: Simplify right side
    20,076.92x = 308,187,649.50
  5. Step 5: Solve for x
    x = 308,187,649.50/20,076.92
  6. Step 6: Final answer
    x = 15,350.35

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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.