Home / 12,144.32-18,250.68-7,214.84

Finding the Fourth Proportional to 12,144.32, 18,250.68 and 7,214.84

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Solution

The fourth proportional to 12,144.32, 18,250.68 and 7,214.84 is: 10,842.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.32 : 18,250.68 = 7,214.84 : x
  2. Step 2: Convert to fraction form
    12,144.32/18,250.68 = 7,214.84/x
  3. Step 3: Cross multiply
    12,144.32x = 18,250.68 × 7,214.84
  4. Step 4: Simplify right side
    12,144.32x = 131,675,736.09
  5. Step 5: Solve for x
    x = 131,675,736.09/12,144.32
  6. Step 6: Final answer
    x = 10,842.58

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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.