Home / 39,419.19-54,398.07-21,514.05

Finding the Fourth Proportional to 39,419.19, 54,398.07 and 21,514.05

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Solution

The fourth proportional to 39,419.19, 54,398.07 and 21,514.05 is: 29,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,419.19 : 54,398.07 = 21,514.05 : x
  2. Step 2: Convert to fraction form
    39,419.19/54,398.07 = 21,514.05/x
  3. Step 3: Cross multiply
    39,419.19x = 54,398.07 × 21,514.05
  4. Step 4: Simplify right side
    39,419.19x = 1,170,322,797.88
  5. Step 5: Solve for x
    x = 1,170,322,797.88/39,419.19
  6. Step 6: Final answer
    x = 29,689.16

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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.