Home / 12,219.27-18,319.94-3,894.50

Finding the Fourth Proportional to 12,219.27, 18,319.94 and 3,894.50

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Solution

The fourth proportional to 12,219.27, 18,319.94 and 3,894.50 is: 5,838.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.27 : 18,319.94 = 3,894.50 : x
  2. Step 2: Convert to fraction form
    12,219.27/18,319.94 = 3,894.50/x
  3. Step 3: Cross multiply
    12,219.27x = 18,319.94 × 3,894.50
  4. Step 4: Simplify right side
    12,219.27x = 71,346,895.26
  5. Step 5: Solve for x
    x = 71,346,895.26/12,219.27
  6. Step 6: Final answer
    x = 5,838.88

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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.