Home / 12,318.30-18,481.68-6,764.58

Finding the Fourth Proportional to 12,318.30, 18,481.68 and 6,764.58

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Solution

The fourth proportional to 12,318.30, 18,481.68 and 6,764.58 is: 10,149.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.30 : 18,481.68 = 6,764.58 : x
  2. Step 2: Convert to fraction form
    12,318.30/18,481.68 = 6,764.58/x
  3. Step 3: Cross multiply
    12,318.30x = 18,481.68 × 6,764.58
  4. Step 4: Simplify right side
    12,318.30x = 125,020,802.89
  5. Step 5: Solve for x
    x = 125,020,802.89/12,318.30
  6. Step 6: Final answer
    x = 10,149.19

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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.