Home / 12,748.60-19,125.60-3,863.20

Finding the Fourth Proportional to 12,748.60, 19,125.60 and 3,863.20

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Solution

The fourth proportional to 12,748.60, 19,125.60 and 3,863.20 is: 5,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.60 : 19,125.60 = 3,863.20 : x
  2. Step 2: Convert to fraction form
    12,748.60/19,125.60 = 3,863.20/x
  3. Step 3: Cross multiply
    12,748.60x = 19,125.60 × 3,863.20
  4. Step 4: Simplify right side
    12,748.60x = 73,886,017.92
  5. Step 5: Solve for x
    x = 73,886,017.92/12,748.60
  6. Step 6: Final answer
    x = 5,795.62

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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.