Home / 12,422.16-18,608.64-8,042.69

Finding the Fourth Proportional to 12,422.16, 18,608.64 and 8,042.69

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Solution

The fourth proportional to 12,422.16, 18,608.64 and 8,042.69 is: 12,048.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.16 : 18,608.64 = 8,042.69 : x
  2. Step 2: Convert to fraction form
    12,422.16/18,608.64 = 8,042.69/x
  3. Step 3: Cross multiply
    12,422.16x = 18,608.64 × 8,042.69
  4. Step 4: Simplify right side
    12,422.16x = 149,663,539.20
  5. Step 5: Solve for x
    x = 149,663,539.20/12,422.16
  6. Step 6: Final answer
    x = 12,048.11

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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.