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Finding the Fourth Proportional to 17,250.80, 25,869.80 and 6,860.40

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Solution

The fourth proportional to 17,250.80, 25,869.80 and 6,860.40 is: 10,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,250.80 : 25,869.80 = 6,860.40 : x
  2. Step 2: Convert to fraction form
    17,250.80/25,869.80 = 6,860.40/x
  3. Step 3: Cross multiply
    17,250.80x = 25,869.80 × 6,860.40
  4. Step 4: Simplify right side
    17,250.80x = 177,477,175.92
  5. Step 5: Solve for x
    x = 177,477,175.92/17,250.80
  6. Step 6: Final answer
    x = 10,288.05

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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.