Home / 12,432.07-17,147.52-8,181.78

Finding the Fourth Proportional to 12,432.07, 17,147.52 and 8,181.78

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Solution

The fourth proportional to 12,432.07, 17,147.52 and 8,181.78 is: 11,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.07 : 17,147.52 = 8,181.78 : x
  2. Step 2: Convert to fraction form
    12,432.07/17,147.52 = 8,181.78/x
  3. Step 3: Cross multiply
    12,432.07x = 17,147.52 × 8,181.78
  4. Step 4: Simplify right side
    12,432.07x = 140,297,236.19
  5. Step 5: Solve for x
    x = 140,297,236.19/12,432.07
  6. Step 6: Final answer
    x = 11,285.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.