Home / 38,405.90-57,610.66-12,112.68

Finding the Fourth Proportional to 38,405.90, 57,610.66 and 12,112.68

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Solution

The fourth proportional to 38,405.90, 57,610.66 and 12,112.68 is: 18,169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,405.90 : 57,610.66 = 12,112.68 : x
  2. Step 2: Convert to fraction form
    38,405.90/57,610.66 = 12,112.68/x
  3. Step 3: Cross multiply
    38,405.90x = 57,610.66 × 12,112.68
  4. Step 4: Simplify right side
    38,405.90x = 697,819,489.17
  5. Step 5: Solve for x
    x = 697,819,489.17/38,405.90
  6. Step 6: Final answer
    x = 18,169.59

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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.