Home / 12,171.33-18,257.58-4,380.30

Finding the Fourth Proportional to 12,171.33, 18,257.58 and 4,380.30

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Solution

The fourth proportional to 12,171.33, 18,257.58 and 4,380.30 is: 6,570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.33 : 18,257.58 = 4,380.30 : x
  2. Step 2: Convert to fraction form
    12,171.33/18,257.58 = 4,380.30/x
  3. Step 3: Cross multiply
    12,171.33x = 18,257.58 × 4,380.30
  4. Step 4: Simplify right side
    12,171.33x = 79,973,677.67
  5. Step 5: Solve for x
    x = 79,973,677.67/12,171.33
  6. Step 6: Final answer
    x = 6,570.66

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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.