Home / 15,627.29-21,565.62-8,912.85

Finding the Fourth Proportional to 15,627.29, 21,565.62 and 8,912.85

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Solution

The fourth proportional to 15,627.29, 21,565.62 and 8,912.85 is: 12,299.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.29 : 21,565.62 = 8,912.85 : x
  2. Step 2: Convert to fraction form
    15,627.29/21,565.62 = 8,912.85/x
  3. Step 3: Cross multiply
    15,627.29x = 21,565.62 × 8,912.85
  4. Step 4: Simplify right side
    15,627.29x = 192,211,136.22
  5. Step 5: Solve for x
    x = 192,211,136.22/15,627.29
  6. Step 6: Final answer
    x = 12,299.71

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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.