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Finding the Fourth Proportional to 10,080.78, 15,121.17 and 5,492.94

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Solution

The fourth proportional to 10,080.78, 15,121.17 and 5,492.94 is: 8,239.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.78 : 15,121.17 = 5,492.94 : x
  2. Step 2: Convert to fraction form
    10,080.78/15,121.17 = 5,492.94/x
  3. Step 3: Cross multiply
    10,080.78x = 15,121.17 × 5,492.94
  4. Step 4: Simplify right side
    10,080.78x = 83,059,679.54
  5. Step 5: Solve for x
    x = 83,059,679.54/10,080.78
  6. Step 6: Final answer
    x = 8,239.41

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1.5x scale

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.