Home / 13,635.20-20,452.80-12,104.30

Finding the Fourth Proportional to 13,635.20, 20,452.80 and 12,104.30

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Solution

The fourth proportional to 13,635.20, 20,452.80 and 12,104.30 is: 18,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.20 : 20,452.80 = 12,104.30 : x
  2. Step 2: Convert to fraction form
    13,635.20/20,452.80 = 12,104.30/x
  3. Step 3: Cross multiply
    13,635.20x = 20,452.80 × 12,104.30
  4. Step 4: Simplify right side
    13,635.20x = 247,566,827.04
  5. Step 5: Solve for x
    x = 247,566,827.04/13,635.20
  6. Step 6: Final answer
    x = 18,156.45

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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.