Home / 12,503.80-18,755.67-5,106.61

Finding the Fourth Proportional to 12,503.80, 18,755.67 and 5,106.61

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Solution

The fourth proportional to 12,503.80, 18,755.67 and 5,106.61 is: 7,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.80 : 18,755.67 = 5,106.61 : x
  2. Step 2: Convert to fraction form
    12,503.80/18,755.67 = 5,106.61/x
  3. Step 3: Cross multiply
    12,503.80x = 18,755.67 × 5,106.61
  4. Step 4: Simplify right side
    12,503.80x = 95,777,891.98
  5. Step 5: Solve for x
    x = 95,777,891.98/12,503.80
  6. Step 6: Final answer
    x = 7,659.90

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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.