Home / 12,212.46-18,326.88-6,669.78

Finding the Fourth Proportional to 12,212.46, 18,326.88 and 6,669.78

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Solution

The fourth proportional to 12,212.46, 18,326.88 and 6,669.78 is: 10,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.46 : 18,326.88 = 6,669.78 : x
  2. Step 2: Convert to fraction form
    12,212.46/18,326.88 = 6,669.78/x
  3. Step 3: Cross multiply
    12,212.46x = 18,326.88 × 6,669.78
  4. Step 4: Simplify right side
    12,212.46x = 122,236,257.69
  5. Step 5: Solve for x
    x = 122,236,257.69/12,212.46
  6. Step 6: Final answer
    x = 10,009.14

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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.