Home / 21,959.82-30,301.56-12,398.13

Finding the Fourth Proportional to 21,959.82, 30,301.56 and 12,398.13

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Solution

The fourth proportional to 21,959.82, 30,301.56 and 12,398.13 is: 17,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.82 : 30,301.56 = 12,398.13 : x
  2. Step 2: Convert to fraction form
    21,959.82/30,301.56 = 12,398.13/x
  3. Step 3: Cross multiply
    21,959.82x = 30,301.56 × 12,398.13
  4. Step 4: Simplify right side
    21,959.82x = 375,682,680.08
  5. Step 5: Solve for x
    x = 375,682,680.08/21,959.82
  6. Step 6: Final answer
    x = 17,107.73

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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.