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Finding the Fourth Proportional to 27,080.10, 40,621.21 and 8,358.47

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Solution

The fourth proportional to 27,080.10, 40,621.21 and 8,358.47 is: 12,538.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,080.10 : 40,621.21 = 8,358.47 : x
  2. Step 2: Convert to fraction form
    27,080.10/40,621.21 = 8,358.47/x
  3. Step 3: Cross multiply
    27,080.10x = 40,621.21 × 8,358.47
  4. Step 4: Simplify right side
    27,080.10x = 339,530,941.15
  5. Step 5: Solve for x
    x = 339,530,941.15/27,080.10
  6. Step 6: Final answer
    x = 12,538.02

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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.