Home / 11,310.30-15,613.56-7,539.75

Finding the Fourth Proportional to 11,310.30, 15,613.56 and 7,539.75

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Solution

The fourth proportional to 11,310.30, 15,613.56 and 7,539.75 is: 10,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.30 : 15,613.56 = 7,539.75 : x
  2. Step 2: Convert to fraction form
    11,310.30/15,613.56 = 7,539.75/x
  3. Step 3: Cross multiply
    11,310.30x = 15,613.56 × 7,539.75
  4. Step 4: Simplify right side
    11,310.30x = 117,722,339.01
  5. Step 5: Solve for x
    x = 117,722,339.01/11,310.30
  6. Step 6: Final answer
    x = 10,408.42

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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.