Home / 20,529.82-28,331.18-11,098.38

Finding the Fourth Proportional to 20,529.82, 28,331.18 and 11,098.38

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Solution

The fourth proportional to 20,529.82, 28,331.18 and 11,098.38 is: 15,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.82 : 28,331.18 = 11,098.38 : x
  2. Step 2: Convert to fraction form
    20,529.82/28,331.18 = 11,098.38/x
  3. Step 3: Cross multiply
    20,529.82x = 28,331.18 × 11,098.38
  4. Step 4: Simplify right side
    20,529.82x = 314,430,201.49
  5. Step 5: Solve for x
    x = 314,430,201.49/20,529.82
  6. Step 6: Final answer
    x = 15,315.78

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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.