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Finding the Fourth Proportional to 17,200.40, 25,800.60 and 6,812.15

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Solution

The fourth proportional to 17,200.40, 25,800.60 and 6,812.15 is: 10,218.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,200.40 : 25,800.60 = 6,812.15 : x
  2. Step 2: Convert to fraction form
    17,200.40/25,800.60 = 6,812.15/x
  3. Step 3: Cross multiply
    17,200.40x = 25,800.60 × 6,812.15
  4. Step 4: Simplify right side
    17,200.40x = 175,757,557.29
  5. Step 5: Solve for x
    x = 175,757,557.29/17,200.40
  6. Step 6: Final answer
    x = 10,218.23

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1.5x scale

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.