Home / 12,141.76-18,211.28-3,257.96

Finding the Fourth Proportional to 12,141.76, 18,211.28 and 3,257.96

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Solution

The fourth proportional to 12,141.76, 18,211.28 and 3,257.96 is: 4,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.76 : 18,211.28 = 3,257.96 : x
  2. Step 2: Convert to fraction form
    12,141.76/18,211.28 = 3,257.96/x
  3. Step 3: Cross multiply
    12,141.76x = 18,211.28 × 3,257.96
  4. Step 4: Simplify right side
    12,141.76x = 59,331,621.79
  5. Step 5: Solve for x
    x = 59,331,621.79/12,141.76
  6. Step 6: Final answer
    x = 4,886.58

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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.