Home / 15,180.60-20,959.68-9,517.64

Finding the Fourth Proportional to 15,180.60, 20,959.68 and 9,517.64

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Solution

The fourth proportional to 15,180.60, 20,959.68 and 9,517.64 is: 13,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.60 : 20,959.68 = 9,517.64 : x
  2. Step 2: Convert to fraction form
    15,180.60/20,959.68 = 9,517.64/x
  3. Step 3: Cross multiply
    15,180.60x = 20,959.68 × 9,517.64
  4. Step 4: Simplify right side
    15,180.60x = 199,486,688.76
  5. Step 5: Solve for x
    x = 199,486,688.76/15,180.60
  6. Step 6: Final answer
    x = 13,140.90

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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.