Home / 20,835.75-28,753.61-11,404.11

Finding the Fourth Proportional to 20,835.75, 28,753.61 and 11,404.11

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Solution

The fourth proportional to 20,835.75, 28,753.61 and 11,404.11 is: 15,737.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.75 : 28,753.61 = 11,404.11 : x
  2. Step 2: Convert to fraction form
    20,835.75/28,753.61 = 11,404.11/x
  3. Step 3: Cross multiply
    20,835.75x = 28,753.61 × 11,404.11
  4. Step 4: Simplify right side
    20,835.75x = 327,909,274.32
  5. Step 5: Solve for x
    x = 327,909,274.32/20,835.75
  6. Step 6: Final answer
    x = 15,737.82

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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.