Home / 12,268.20-18,387.90-5,680.48

Finding the Fourth Proportional to 12,268.20, 18,387.90 and 5,680.48

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Solution

The fourth proportional to 12,268.20, 18,387.90 and 5,680.48 is: 8,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.20 : 18,387.90 = 5,680.48 : x
  2. Step 2: Convert to fraction form
    12,268.20/18,387.90 = 5,680.48/x
  3. Step 3: Cross multiply
    12,268.20x = 18,387.90 × 5,680.48
  4. Step 4: Simplify right side
    12,268.20x = 104,452,098.19
  5. Step 5: Solve for x
    x = 104,452,098.19/12,268.20
  6. Step 6: Final answer
    x = 8,514.05

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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.