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Finding the Fourth Proportional to 16,661.20, 25,020.60 and 8,885.20

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Solution

The fourth proportional to 16,661.20, 25,020.60 and 8,885.20 is: 13,343.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,661.20 : 25,020.60 = 8,885.20 : x
  2. Step 2: Convert to fraction form
    16,661.20/25,020.60 = 8,885.20/x
  3. Step 3: Cross multiply
    16,661.20x = 25,020.60 × 8,885.20
  4. Step 4: Simplify right side
    16,661.20x = 222,313,035.12
  5. Step 5: Solve for x
    x = 222,313,035.12/16,661.20
  6. Step 6: Final answer
    x = 13,343.16

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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.