Home / 39,787.60-54,904.21-22,791.91

Finding the Fourth Proportional to 39,787.60, 54,904.21 and 22,791.91

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Solution

The fourth proportional to 39,787.60, 54,904.21 and 22,791.91 is: 31,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.60 : 54,904.21 = 22,791.91 : x
  2. Step 2: Convert to fraction form
    39,787.60/54,904.21 = 22,791.91/x
  3. Step 3: Cross multiply
    39,787.60x = 54,904.21 × 22,791.91
  4. Step 4: Simplify right side
    39,787.60x = 1,251,371,812.94
  5. Step 5: Solve for x
    x = 1,251,371,812.94/39,787.60
  6. Step 6: Final answer
    x = 31,451.30

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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.