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Finding the Fourth Proportional to 16,879.20, 25,318.80 and 16,648.80

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Solution

The fourth proportional to 16,879.20, 25,318.80 and 16,648.80 is: 24,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.20 : 25,318.80 = 16,648.80 : x
  2. Step 2: Convert to fraction form
    16,879.20/25,318.80 = 16,648.80/x
  3. Step 3: Cross multiply
    16,879.20x = 25,318.80 × 16,648.80
  4. Step 4: Simplify right side
    16,879.20x = 421,527,637.44
  5. Step 5: Solve for x
    x = 421,527,637.44/16,879.20
  6. Step 6: Final answer
    x = 24,973.20

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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.