Home / 38,936.76-58,414.32-12,639.48

Finding the Fourth Proportional to 38,936.76, 58,414.32 and 12,639.48

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Solution

The fourth proportional to 38,936.76, 58,414.32 and 12,639.48 is: 18,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,936.76 : 58,414.32 = 12,639.48 : x
  2. Step 2: Convert to fraction form
    38,936.76/58,414.32 = 12,639.48/x
  3. Step 3: Cross multiply
    38,936.76x = 58,414.32 × 12,639.48
  4. Step 4: Simplify right side
    38,936.76x = 738,326,629.35
  5. Step 5: Solve for x
    x = 738,326,629.35/38,936.76
  6. Step 6: Final answer
    x = 18,962.20

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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.