Home / 13,629.60-20,445.62-8,079.48

Finding the Fourth Proportional to 13,629.60, 20,445.62 and 8,079.48

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Solution

The fourth proportional to 13,629.60, 20,445.62 and 8,079.48 is: 12,119.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.60 : 20,445.62 = 8,079.48 : x
  2. Step 2: Convert to fraction form
    13,629.60/20,445.62 = 8,079.48/x
  3. Step 3: Cross multiply
    13,629.60x = 20,445.62 × 8,079.48
  4. Step 4: Simplify right side
    13,629.60x = 165,189,937.48
  5. Step 5: Solve for x
    x = 165,189,937.48/13,629.60
  6. Step 6: Final answer
    x = 12,119.94

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1.5x scale

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.