Home / 21,144.65-31,738.61-16,515.95

Finding the Fourth Proportional to 21,144.65, 31,738.61 and 16,515.95

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Solution

The fourth proportional to 21,144.65, 31,738.61 and 16,515.95 is: 24,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.65 : 31,738.61 = 16,515.95 : x
  2. Step 2: Convert to fraction form
    21,144.65/31,738.61 = 16,515.95/x
  3. Step 3: Cross multiply
    21,144.65x = 31,738.61 × 16,515.95
  4. Step 4: Simplify right side
    21,144.65x = 524,193,310.50
  5. Step 5: Solve for x
    x = 524,193,310.50/21,144.65
  6. Step 6: Final answer
    x = 24,790.83

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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.