Home / 39,422.82-54,403.68-21,518.28

Finding the Fourth Proportional to 39,422.82, 54,403.68 and 21,518.28

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Solution

The fourth proportional to 39,422.82, 54,403.68 and 21,518.28 is: 29,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.82 : 54,403.68 = 21,518.28 : x
  2. Step 2: Convert to fraction form
    39,422.82/54,403.68 = 21,518.28/x
  3. Step 3: Cross multiply
    39,422.82x = 54,403.68 × 21,518.28
  4. Step 4: Simplify right side
    39,422.82x = 1,170,673,619.27
  5. Step 5: Solve for x
    x = 1,170,673,619.27/39,422.82
  6. Step 6: Final answer
    x = 29,695.33

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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.