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Finding the Fourth Proportional to 16,998.80, 25,501.80 and 5,151.60

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Solution

The fourth proportional to 16,998.80, 25,501.80 and 5,151.60 is: 7,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,998.80 : 25,501.80 = 5,151.60 : x
  2. Step 2: Convert to fraction form
    16,998.80/25,501.80 = 5,151.60/x
  3. Step 3: Cross multiply
    16,998.80x = 25,501.80 × 5,151.60
  4. Step 4: Simplify right side
    16,998.80x = 131,375,072.88
  5. Step 5: Solve for x
    x = 131,375,072.88/16,998.80
  6. Step 6: Final answer
    x = 7,728.49

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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.