Home / 39,767.64-54,879.36-21,862.50

Finding the Fourth Proportional to 39,767.64, 54,879.36 and 21,862.50

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Solution

The fourth proportional to 39,767.64, 54,879.36 and 21,862.50 is: 30,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,767.64 : 54,879.36 = 21,862.50 : x
  2. Step 2: Convert to fraction form
    39,767.64/54,879.36 = 21,862.50/x
  3. Step 3: Cross multiply
    39,767.64x = 54,879.36 × 21,862.50
  4. Step 4: Simplify right side
    39,767.64x = 1,199,800,008
  5. Step 5: Solve for x
    x = 1,199,800,008/39,767.64
  6. Step 6: Final answer
    x = 30,170.26

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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.