Home / 39,756.61-54,863.41-21,851.61

Finding the Fourth Proportional to 39,756.61, 54,863.41 and 21,851.61

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Solution

The fourth proportional to 39,756.61, 54,863.41 and 21,851.61 is: 30,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.61 : 54,863.41 = 21,851.61 : x
  2. Step 2: Convert to fraction form
    39,756.61/54,863.41 = 21,851.61/x
  3. Step 3: Cross multiply
    39,756.61x = 54,863.41 × 21,851.61
  4. Step 4: Simplify right side
    39,756.61x = 1,198,853,942.84
  5. Step 5: Solve for x
    x = 1,198,853,942.84/39,756.61
  6. Step 6: Final answer
    x = 30,154.83

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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.