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Finding the Fourth Proportional to 17,800.80, 26,678.48 and 8,440.80

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Solution

The fourth proportional to 17,800.80, 26,678.48 and 8,440.80 is: 12,650.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,800.80 : 26,678.48 = 8,440.80 : x
  2. Step 2: Convert to fraction form
    17,800.80/26,678.48 = 8,440.80/x
  3. Step 3: Cross multiply
    17,800.80x = 26,678.48 × 8,440.80
  4. Step 4: Simplify right side
    17,800.80x = 225,187,713.98
  5. Step 5: Solve for x
    x = 225,187,713.98/17,800.80
  6. Step 6: Final answer
    x = 12,650.43

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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.