Home / 20,299.38-28,013.04-11,346.90

Finding the Fourth Proportional to 20,299.38, 28,013.04 and 11,346.90

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Solution

The fourth proportional to 20,299.38, 28,013.04 and 11,346.90 is: 15,658.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.38 : 28,013.04 = 11,346.90 : x
  2. Step 2: Convert to fraction form
    20,299.38/28,013.04 = 11,346.90/x
  3. Step 3: Cross multiply
    20,299.38x = 28,013.04 × 11,346.90
  4. Step 4: Simplify right side
    20,299.38x = 317,861,163.58
  5. Step 5: Solve for x
    x = 317,861,163.58/20,299.38
  6. Step 6: Final answer
    x = 15,658.66

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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.