Home / 18,706.28-25,805.76-11,148.26

Finding the Fourth Proportional to 18,706.28, 25,805.76 and 11,148.26

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Solution

The fourth proportional to 18,706.28, 25,805.76 and 11,148.26 is: 15,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.28 : 25,805.76 = 11,148.26 : x
  2. Step 2: Convert to fraction form
    18,706.28/25,805.76 = 11,148.26/x
  3. Step 3: Cross multiply
    18,706.28x = 25,805.76 × 11,148.26
  4. Step 4: Simplify right side
    18,706.28x = 287,689,321.98
  5. Step 5: Solve for x
    x = 287,689,321.98/18,706.28
  6. Step 6: Final answer
    x = 15,379.29

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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.