Home / 12,211.64-18,318.94-3,888.74

Finding the Fourth Proportional to 12,211.64, 18,318.94 and 3,888.74

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Solution

The fourth proportional to 12,211.64, 18,318.94 and 3,888.74 is: 5,833.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.64 : 18,318.94 = 3,888.74 : x
  2. Step 2: Convert to fraction form
    12,211.64/18,318.94 = 3,888.74/x
  3. Step 3: Cross multiply
    12,211.64x = 18,318.94 × 3,888.74
  4. Step 4: Simplify right side
    12,211.64x = 71,237,594.74
  5. Step 5: Solve for x
    x = 71,237,594.74/12,211.64
  6. Step 6: Final answer
    x = 5,833.58

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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.