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Finding the Fourth Proportional to 17,121.15, 25,685.88 and 5,434.47

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Solution

The fourth proportional to 17,121.15, 25,685.88 and 5,434.47 is: 8,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.15 : 25,685.88 = 5,434.47 : x
  2. Step 2: Convert to fraction form
    17,121.15/25,685.88 = 5,434.47/x
  3. Step 3: Cross multiply
    17,121.15x = 25,685.88 × 5,434.47
  4. Step 4: Simplify right side
    17,121.15x = 139,589,144.28
  5. Step 5: Solve for x
    x = 139,589,144.28/17,121.15
  6. Step 6: Final answer
    x = 8,153.02

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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.