Home / 39,418.77-54,398.06-21,514.15

Finding the Fourth Proportional to 39,418.77, 54,398.06 and 21,514.15

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Solution

The fourth proportional to 39,418.77, 54,398.06 and 21,514.15 is: 29,689.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.77 : 54,398.06 = 21,514.15 : x
  2. Step 2: Convert to fraction form
    39,418.77/54,398.06 = 21,514.15/x
  3. Step 3: Cross multiply
    39,418.77x = 54,398.06 × 21,514.15
  4. Step 4: Simplify right side
    39,418.77x = 1,170,328,022.55
  5. Step 5: Solve for x
    x = 1,170,328,022.55/39,418.77
  6. Step 6: Final answer
    x = 29,689.61

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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.