Home / 13,155.12-18,132.84-12,069

Finding the Fourth Proportional to 13,155.12, 18,132.84 and 12,069

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Solution

The fourth proportional to 13,155.12, 18,132.84 and 12,069 is: 16,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.12 : 18,132.84 = 12,069 : x
  2. Step 2: Convert to fraction form
    13,155.12/18,132.84 = 12,069/x
  3. Step 3: Cross multiply
    13,155.12x = 18,132.84 × 12,069
  4. Step 4: Simplify right side
    13,155.12x = 218,845,245.96
  5. Step 5: Solve for x
    x = 218,845,245.96/13,155.12
  6. Step 6: Final answer
    x = 16,635.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.