Home / 39,542.91-54,570.09-21,637.90

Finding the Fourth Proportional to 39,542.91, 54,570.09 and 21,637.90

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Solution

The fourth proportional to 39,542.91, 54,570.09 and 21,637.90 is: 29,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,542.91 : 54,570.09 = 21,637.90 : x
  2. Step 2: Convert to fraction form
    39,542.91/54,570.09 = 21,637.90/x
  3. Step 3: Cross multiply
    39,542.91x = 54,570.09 × 21,637.90
  4. Step 4: Simplify right side
    39,542.91x = 1,180,782,150.41
  5. Step 5: Solve for x
    x = 1,180,782,150.41/39,542.91
  6. Step 6: Final answer
    x = 29,860.78

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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.