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Finding the Fourth Proportional to 17,145.30, 25,761.15 and 10,908.30

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Solution

The fourth proportional to 17,145.30, 25,761.15 and 10,908.30 is: 16,389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,145.30 : 25,761.15 = 10,908.30 : x
  2. Step 2: Convert to fraction form
    17,145.30/25,761.15 = 10,908.30/x
  3. Step 3: Cross multiply
    17,145.30x = 25,761.15 × 10,908.30
  4. Step 4: Simplify right side
    17,145.30x = 281,010,352.55
  5. Step 5: Solve for x
    x = 281,010,352.55/17,145.30
  6. Step 6: Final answer
    x = 16,389.93

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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.