Home / 38,961.45-58,405.19-12,647.79

Finding the Fourth Proportional to 38,961.45, 58,405.19 and 12,647.79

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Solution

The fourth proportional to 38,961.45, 58,405.19 and 12,647.79 is: 18,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,961.45 : 58,405.19 = 12,647.79 : x
  2. Step 2: Convert to fraction form
    38,961.45/58,405.19 = 12,647.79/x
  3. Step 3: Cross multiply
    38,961.45x = 58,405.19 × 12,647.79
  4. Step 4: Simplify right side
    38,961.45x = 738,696,514.79
  5. Step 5: Solve for x
    x = 738,696,514.79/38,961.45
  6. Step 6: Final answer
    x = 18,959.68

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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.