Home / 39,767.97-54,879.93-21,863.28

Finding the Fourth Proportional to 39,767.97, 54,879.93 and 21,863.28

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Solution

The fourth proportional to 39,767.97, 54,879.93 and 21,863.28 is: 30,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,767.97 : 54,879.93 = 21,863.28 : x
  2. Step 2: Convert to fraction form
    39,767.97/54,879.93 = 21,863.28/x
  3. Step 3: Cross multiply
    39,767.97x = 54,879.93 × 21,863.28
  4. Step 4: Simplify right side
    39,767.97x = 1,199,855,275.97
  5. Step 5: Solve for x
    x = 1,199,855,275.97/39,767.97
  6. Step 6: Final answer
    x = 30,171.40

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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.