Home / 15,422.44-23,129.82-12,649

Finding the Fourth Proportional to 15,422.44, 23,129.82 and 12,649

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Solution

The fourth proportional to 15,422.44, 23,129.82 and 12,649 is: 18,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.44 : 23,129.82 = 12,649 : x
  2. Step 2: Convert to fraction form
    15,422.44/23,129.82 = 12,649/x
  3. Step 3: Cross multiply
    15,422.44x = 23,129.82 × 12,649
  4. Step 4: Simplify right side
    15,422.44x = 292,569,093.18
  5. Step 5: Solve for x
    x = 292,569,093.18/15,422.44
  6. Step 6: Final answer
    x = 18,970.35

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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.