Home / 13,452.30-20,178.45-8,531.55

Finding the Fourth Proportional to 13,452.30, 20,178.45 and 8,531.55

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Solution

The fourth proportional to 13,452.30, 20,178.45 and 8,531.55 is: 12,797.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,452.30 : 20,178.45 = 8,531.55 : x
  2. Step 2: Convert to fraction form
    13,452.30/20,178.45 = 8,531.55/x
  3. Step 3: Cross multiply
    13,452.30x = 20,178.45 × 8,531.55
  4. Step 4: Simplify right side
    13,452.30x = 172,153,455.10
  5. Step 5: Solve for x
    x = 172,153,455.10/13,452.30
  6. Step 6: Final answer
    x = 12,797.33

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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.