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Finding the Fourth Proportional to 16,660.86, 25,003.62 and 7,895.80

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Solution

The fourth proportional to 16,660.86, 25,003.62 and 7,895.80 is: 11,849.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,660.86 : 25,003.62 = 7,895.80 : x
  2. Step 2: Convert to fraction form
    16,660.86/25,003.62 = 7,895.80/x
  3. Step 3: Cross multiply
    16,660.86x = 25,003.62 × 7,895.80
  4. Step 4: Simplify right side
    16,660.86x = 197,423,582.80
  5. Step 5: Solve for x
    x = 197,423,582.80/16,660.86
  6. Step 6: Final answer
    x = 11,849.54

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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.