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Finding the Fourth Proportional to 15,080.84, 20,811.56 and 8,366.55

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Solution

The fourth proportional to 15,080.84, 20,811.56 and 8,366.55 is: 11,545.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.84 : 20,811.56 = 8,366.55 : x
  2. Step 2: Convert to fraction form
    15,080.84/20,811.56 = 8,366.55/x
  3. Step 3: Cross multiply
    15,080.84x = 20,811.56 × 8,366.55
  4. Step 4: Simplify right side
    15,080.84x = 174,120,957.32
  5. Step 5: Solve for x
    x = 174,120,957.32/15,080.84
  6. Step 6: Final answer
    x = 11,545.84

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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.