Home / 39,387.51-54,359.43-22,394.32

Finding the Fourth Proportional to 39,387.51, 54,359.43 and 22,394.32

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Solution

The fourth proportional to 39,387.51, 54,359.43 and 22,394.32 is: 30,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.51 : 54,359.43 = 22,394.32 : x
  2. Step 2: Convert to fraction form
    39,387.51/54,359.43 = 22,394.32/x
  3. Step 3: Cross multiply
    39,387.51x = 54,359.43 × 22,394.32
  4. Step 4: Simplify right side
    39,387.51x = 1,217,342,470.44
  5. Step 5: Solve for x
    x = 1,217,342,470.44/39,387.51
  6. Step 6: Final answer
    x = 30,906.81

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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.