Home / 21,958.22-30,302.17-12,398.13

Finding the Fourth Proportional to 21,958.22, 30,302.17 and 12,398.13

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Solution

The fourth proportional to 21,958.22, 30,302.17 and 12,398.13 is: 17,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.22 : 30,302.17 = 12,398.13 : x
  2. Step 2: Convert to fraction form
    21,958.22/30,302.17 = 12,398.13/x
  3. Step 3: Cross multiply
    21,958.22x = 30,302.17 × 12,398.13
  4. Step 4: Simplify right side
    21,958.22x = 375,690,211.95
  5. Step 5: Solve for x
    x = 375,690,211.95/21,958.22
  6. Step 6: Final answer
    x = 17,109.32

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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.