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Finding the Fourth Proportional to 15,024.65, 20,734.32 and 8,310.90

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Solution

The fourth proportional to 15,024.65, 20,734.32 and 8,310.90 is: 11,469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,024.65 : 20,734.32 = 8,310.90 : x
  2. Step 2: Convert to fraction form
    15,024.65/20,734.32 = 8,310.90/x
  3. Step 3: Cross multiply
    15,024.65x = 20,734.32 × 8,310.90
  4. Step 4: Simplify right side
    15,024.65x = 172,320,860.09
  5. Step 5: Solve for x
    x = 172,320,860.09/15,024.65
  6. Step 6: Final answer
    x = 11,469.21

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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.