Home / 22,371.29-30,872.40-12,299.90

Finding the Fourth Proportional to 22,371.29, 30,872.40 and 12,299.90

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Solution

The fourth proportional to 22,371.29, 30,872.40 and 12,299.90 is: 16,973.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,371.29 : 30,872.40 = 12,299.90 : x
  2. Step 2: Convert to fraction form
    22,371.29/30,872.40 = 12,299.90/x
  3. Step 3: Cross multiply
    22,371.29x = 30,872.40 × 12,299.90
  4. Step 4: Simplify right side
    22,371.29x = 379,727,371.26
  5. Step 5: Solve for x
    x = 379,727,371.26/22,371.29
  6. Step 6: Final answer
    x = 16,973.87

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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.