Home / 20,529.97-28,331.40-11,098.53

Finding the Fourth Proportional to 20,529.97, 28,331.40 and 11,098.53

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Solution

The fourth proportional to 20,529.97, 28,331.40 and 11,098.53 is: 15,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.97 : 28,331.40 = 11,098.53 : x
  2. Step 2: Convert to fraction form
    20,529.97/28,331.40 = 11,098.53/x
  3. Step 3: Cross multiply
    20,529.97x = 28,331.40 × 11,098.53
  4. Step 4: Simplify right side
    20,529.97x = 314,436,892.84
  5. Step 5: Solve for x
    x = 314,436,892.84/20,529.97
  6. Step 6: Final answer
    x = 15,315.99

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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.