Home / 39,717.18-54,810.18-21,811.86

Finding the Fourth Proportional to 39,717.18, 54,810.18 and 21,811.86

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Solution

The fourth proportional to 39,717.18, 54,810.18 and 21,811.86 is: 30,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.18 : 54,810.18 = 21,811.86 : x
  2. Step 2: Convert to fraction form
    39,717.18/54,810.18 = 21,811.86/x
  3. Step 3: Cross multiply
    39,717.18x = 54,810.18 × 21,811.86
  4. Step 4: Simplify right side
    39,717.18x = 1,195,511,972.73
  5. Step 5: Solve for x
    x = 1,195,511,972.73/39,717.18
  6. Step 6: Final answer
    x = 30,100.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.