Home / 15,165.87-20,930.60-8,452.11

Finding the Fourth Proportional to 15,165.87, 20,930.60 and 8,452.11

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Solution

The fourth proportional to 15,165.87, 20,930.60 and 8,452.11 is: 11,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.87 : 20,930.60 = 8,452.11 : x
  2. Step 2: Convert to fraction form
    15,165.87/20,930.60 = 8,452.11/x
  3. Step 3: Cross multiply
    15,165.87x = 20,930.60 × 8,452.11
  4. Step 4: Simplify right side
    15,165.87x = 176,907,691.31
  5. Step 5: Solve for x
    x = 176,907,691.31/15,165.87
  6. Step 6: Final answer
    x = 11,664.86

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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.