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Finding the Fourth Proportional to 17,144.80, 25,760.40 and 10,907.80

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Solution

The fourth proportional to 17,144.80, 25,760.40 and 10,907.80 is: 16,389.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,144.80 : 25,760.40 = 10,907.80 : x
  2. Step 2: Convert to fraction form
    17,144.80/25,760.40 = 10,907.80/x
  3. Step 3: Cross multiply
    17,144.80x = 25,760.40 × 10,907.80
  4. Step 4: Simplify right side
    17,144.80x = 280,989,291.12
  5. Step 5: Solve for x
    x = 280,989,291.12/17,144.80
  6. Step 6: Final answer
    x = 16,389.18

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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.