Home / 12,212.45-18,321.56-9,723.05

Finding the Fourth Proportional to 12,212.45, 18,321.56 and 9,723.05

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Solution

The fourth proportional to 12,212.45, 18,321.56 and 9,723.05 is: 14,586.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.45 : 18,321.56 = 9,723.05 : x
  2. Step 2: Convert to fraction form
    12,212.45/18,321.56 = 9,723.05/x
  3. Step 3: Cross multiply
    12,212.45x = 18,321.56 × 9,723.05
  4. Step 4: Simplify right side
    12,212.45x = 178,141,381.56
  5. Step 5: Solve for x
    x = 178,141,381.56/12,212.45
  6. Step 6: Final answer
    x = 14,586.86

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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.