Home / 12,211.66-18,318.92-3,888.76

Finding the Fourth Proportional to 12,211.66, 18,318.92 and 3,888.76

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Solution

The fourth proportional to 12,211.66, 18,318.92 and 3,888.76 is: 5,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.66 : 18,318.92 = 3,888.76 : x
  2. Step 2: Convert to fraction form
    12,211.66/18,318.92 = 3,888.76/x
  3. Step 3: Cross multiply
    12,211.66x = 18,318.92 × 3,888.76
  4. Step 4: Simplify right side
    12,211.66x = 71,237,883.34
  5. Step 5: Solve for x
    x = 71,237,883.34/12,211.66
  6. Step 6: Final answer
    x = 5,833.60

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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.