Home / 20,701.88-28,568.66-11,270.50

Finding the Fourth Proportional to 20,701.88, 28,568.66 and 11,270.50

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Solution

The fourth proportional to 20,701.88, 28,568.66 and 11,270.50 is: 15,553.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.88 : 28,568.66 = 11,270.50 : x
  2. Step 2: Convert to fraction form
    20,701.88/28,568.66 = 11,270.50/x
  3. Step 3: Cross multiply
    20,701.88x = 28,568.66 × 11,270.50
  4. Step 4: Simplify right side
    20,701.88x = 321,983,082.53
  5. Step 5: Solve for x
    x = 321,983,082.53/20,701.88
  6. Step 6: Final answer
    x = 15,553.33

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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.