Home / 28,164.75-42,288.66-15,709.11

Finding the Fourth Proportional to 28,164.75, 42,288.66 and 15,709.11

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Solution

The fourth proportional to 28,164.75, 42,288.66 and 15,709.11 is: 23,586.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.75 : 42,288.66 = 15,709.11 : x
  2. Step 2: Convert to fraction form
    28,164.75/42,288.66 = 15,709.11/x
  3. Step 3: Cross multiply
    28,164.75x = 42,288.66 × 15,709.11
  4. Step 4: Simplify right side
    28,164.75x = 664,317,211.69
  5. Step 5: Solve for x
    x = 664,317,211.69/28,164.75
  6. Step 6: Final answer
    x = 23,586.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.