Home / 21,371.84-29,496.90-12,422.12

Finding the Fourth Proportional to 21,371.84, 29,496.90 and 12,422.12

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Solution

The fourth proportional to 21,371.84, 29,496.90 and 12,422.12 is: 17,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.84 : 29,496.90 = 12,422.12 : x
  2. Step 2: Convert to fraction form
    21,371.84/29,496.90 = 12,422.12/x
  3. Step 3: Cross multiply
    21,371.84x = 29,496.90 × 12,422.12
  4. Step 4: Simplify right side
    21,371.84x = 366,414,031.43
  5. Step 5: Solve for x
    x = 366,414,031.43/21,371.84
  6. Step 6: Final answer
    x = 17,144.71

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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.