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Finding the Fourth Proportional to 15,080.62, 20,792.11 and 10,778.84

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Solution

The fourth proportional to 15,080.62, 20,792.11 and 10,778.84 is: 14,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.62 : 20,792.11 = 10,778.84 : x
  2. Step 2: Convert to fraction form
    15,080.62/20,792.11 = 10,778.84/x
  3. Step 3: Cross multiply
    15,080.62x = 20,792.11 × 10,778.84
  4. Step 4: Simplify right side
    15,080.62x = 224,114,826.95
  5. Step 5: Solve for x
    x = 224,114,826.95/15,080.62
  6. Step 6: Final answer
    x = 14,861.11

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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.