Home / 12,219.29-18,327.31-3,454.88

Finding the Fourth Proportional to 12,219.29, 18,327.31 and 3,454.88

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Solution

The fourth proportional to 12,219.29, 18,327.31 and 3,454.88 is: 5,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.29 : 18,327.31 = 3,454.88 : x
  2. Step 2: Convert to fraction form
    12,219.29/18,327.31 = 3,454.88/x
  3. Step 3: Cross multiply
    12,219.29x = 18,327.31 × 3,454.88
  4. Step 4: Simplify right side
    12,219.29x = 63,318,656.77
  5. Step 5: Solve for x
    x = 63,318,656.77/12,219.29
  6. Step 6: Final answer
    x = 5,181.86

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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.