Home / 12,212.72-18,319.09-3,892.76

Finding the Fourth Proportional to 12,212.72, 18,319.09 and 3,892.76

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Solution

The fourth proportional to 12,212.72, 18,319.09 and 3,892.76 is: 5,839.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.72 : 18,319.09 = 3,892.76 : x
  2. Step 2: Convert to fraction form
    12,212.72/18,319.09 = 3,892.76/x
  3. Step 3: Cross multiply
    12,212.72x = 18,319.09 × 3,892.76
  4. Step 4: Simplify right side
    12,212.72x = 71,311,784.51
  5. Step 5: Solve for x
    x = 71,311,784.51/12,212.72
  6. Step 6: Final answer
    x = 5,839.14

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Similar ratio
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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.