Home / 39,728.72-54,822.92-21,824.48

Finding the Fourth Proportional to 39,728.72, 54,822.92 and 21,824.48

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Solution

The fourth proportional to 39,728.72, 54,822.92 and 21,824.48 is: 30,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,728.72 : 54,822.92 = 21,824.48 : x
  2. Step 2: Convert to fraction form
    39,728.72/54,822.92 = 21,824.48/x
  3. Step 3: Cross multiply
    39,728.72x = 54,822.92 × 21,824.48
  4. Step 4: Simplify right side
    39,728.72x = 1,196,481,721.08
  5. Step 5: Solve for x
    x = 1,196,481,721.08/39,728.72
  6. Step 6: Final answer
    x = 30,116.29

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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.