Home / 13,445.78-20,169.48-4,086.11

Finding the Fourth Proportional to 13,445.78, 20,169.48 and 4,086.11

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Solution

The fourth proportional to 13,445.78, 20,169.48 and 4,086.11 is: 6,129.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.78 : 20,169.48 = 4,086.11 : x
  2. Step 2: Convert to fraction form
    13,445.78/20,169.48 = 4,086.11/x
  3. Step 3: Cross multiply
    13,445.78x = 20,169.48 × 4,086.11
  4. Step 4: Simplify right side
    13,445.78x = 82,414,713.92
  5. Step 5: Solve for x
    x = 82,414,713.92/13,445.78
  6. Step 6: Final answer
    x = 6,129.41

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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.