Home / 18,943.26-26,136.42-12,229.20

Finding the Fourth Proportional to 18,943.26, 26,136.42 and 12,229.20

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Solution

The fourth proportional to 18,943.26, 26,136.42 and 12,229.20 is: 16,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.26 : 26,136.42 = 12,229.20 : x
  2. Step 2: Convert to fraction form
    18,943.26/26,136.42 = 12,229.20/x
  3. Step 3: Cross multiply
    18,943.26x = 26,136.42 × 12,229.20
  4. Step 4: Simplify right side
    18,943.26x = 319,627,507.46
  5. Step 5: Solve for x
    x = 319,627,507.46/18,943.26
  6. Step 6: Final answer
    x = 16,872.89

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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.