Home / 12,825.60-19,211.46-8,143.21

Finding the Fourth Proportional to 12,825.60, 19,211.46 and 8,143.21

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Solution

The fourth proportional to 12,825.60, 19,211.46 and 8,143.21 is: 12,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.60 : 19,211.46 = 8,143.21 : x
  2. Step 2: Convert to fraction form
    12,825.60/19,211.46 = 8,143.21/x
  3. Step 3: Cross multiply
    12,825.60x = 19,211.46 × 8,143.21
  4. Step 4: Simplify right side
    12,825.60x = 156,442,953.19
  5. Step 5: Solve for x
    x = 156,442,953.19/12,825.60
  6. Step 6: Final answer
    x = 12,197.71

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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.