Home / 12,211.31-18,317.75-3,446.91

Finding the Fourth Proportional to 12,211.31, 18,317.75 and 3,446.91

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Solution

The fourth proportional to 12,211.31, 18,317.75 and 3,446.91 is: 5,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.31 : 18,317.75 = 3,446.91 : x
  2. Step 2: Convert to fraction form
    12,211.31/18,317.75 = 3,446.91/x
  3. Step 3: Cross multiply
    12,211.31x = 18,317.75 × 3,446.91
  4. Step 4: Simplify right side
    12,211.31x = 63,139,618.42
  5. Step 5: Solve for x
    x = 63,139,618.42/12,211.31
  6. Step 6: Final answer
    x = 5,170.58

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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.