Home / 12,321.45-18,481.16-6,398.32

Finding the Fourth Proportional to 12,321.45, 18,481.16 and 6,398.32

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Solution

The fourth proportional to 12,321.45, 18,481.16 and 6,398.32 is: 9,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.45 : 18,481.16 = 6,398.32 : x
  2. Step 2: Convert to fraction form
    12,321.45/18,481.16 = 6,398.32/x
  3. Step 3: Cross multiply
    12,321.45x = 18,481.16 × 6,398.32
  4. Step 4: Simplify right side
    12,321.45x = 118,248,343.66
  5. Step 5: Solve for x
    x = 118,248,343.66/12,321.45
  6. Step 6: Final answer
    x = 9,596.95

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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.