Home / 13,144.25-19,708.80-8,989.30

Finding the Fourth Proportional to 13,144.25, 19,708.80 and 8,989.30

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Solution

The fourth proportional to 13,144.25, 19,708.80 and 8,989.30 is: 13,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.25 : 19,708.80 = 8,989.30 : x
  2. Step 2: Convert to fraction form
    13,144.25/19,708.80 = 8,989.30/x
  3. Step 3: Cross multiply
    13,144.25x = 19,708.80 × 8,989.30
  4. Step 4: Simplify right side
    13,144.25x = 177,168,266.57
  5. Step 5: Solve for x
    x = 177,168,266.57/13,144.25
  6. Step 6: Final answer
    x = 13,478.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.