Home / 12,087.07-18,126.21-4,187.43

Finding the Fourth Proportional to 12,087.07, 18,126.21 and 4,187.43

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Solution

The fourth proportional to 12,087.07, 18,126.21 and 4,187.43 is: 6,279.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.07 : 18,126.21 = 4,187.43 : x
  2. Step 2: Convert to fraction form
    12,087.07/18,126.21 = 4,187.43/x
  3. Step 3: Cross multiply
    12,087.07x = 18,126.21 × 4,187.43
  4. Step 4: Simplify right side
    12,087.07x = 75,902,235.54
  5. Step 5: Solve for x
    x = 75,902,235.54/12,087.07
  6. Step 6: Final answer
    x = 6,279.62

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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.