Home / 39,292.97-54,222.57-21,388.12

Finding the Fourth Proportional to 39,292.97, 54,222.57 and 21,388.12

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Solution

The fourth proportional to 39,292.97, 54,222.57 and 21,388.12 is: 29,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.97 : 54,222.57 = 21,388.12 : x
  2. Step 2: Convert to fraction form
    39,292.97/54,222.57 = 21,388.12/x
  3. Step 3: Cross multiply
    39,292.97x = 54,222.57 × 21,388.12
  4. Step 4: Simplify right side
    39,292.97x = 1,159,718,698.31
  5. Step 5: Solve for x
    x = 1,159,718,698.31/39,292.97
  6. Step 6: Final answer
    x = 29,514.66

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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.