Home / 39,847.47-54,989.51-21,942.43

Finding the Fourth Proportional to 39,847.47, 54,989.51 and 21,942.43

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Solution

The fourth proportional to 39,847.47, 54,989.51 and 21,942.43 is: 30,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.47 : 54,989.51 = 21,942.43 : x
  2. Step 2: Convert to fraction form
    39,847.47/54,989.51 = 21,942.43/x
  3. Step 3: Cross multiply
    39,847.47x = 54,989.51 × 21,942.43
  4. Step 4: Simplify right side
    39,847.47x = 1,206,603,473.91
  5. Step 5: Solve for x
    x = 1,206,603,473.91/39,847.47
  6. Step 6: Final answer
    x = 30,280.55

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1.5x scale

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.