Home / 13,455.84-20,149.20-8,245.92

Finding the Fourth Proportional to 13,455.84, 20,149.20 and 8,245.92

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Solution

The fourth proportional to 13,455.84, 20,149.20 and 8,245.92 is: 12,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.84 : 20,149.20 = 8,245.92 : x
  2. Step 2: Convert to fraction form
    13,455.84/20,149.20 = 8,245.92/x
  3. Step 3: Cross multiply
    13,455.84x = 20,149.20 × 8,245.92
  4. Step 4: Simplify right side
    13,455.84x = 166,148,691.26
  5. Step 5: Solve for x
    x = 166,148,691.26/13,455.84
  6. Step 6: Final answer
    x = 12,347.70

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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.