Home / 13,091.46-18,077.11-12,141.72

Finding the Fourth Proportional to 13,091.46, 18,077.11 and 12,141.72

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Solution

The fourth proportional to 13,091.46, 18,077.11 and 12,141.72 is: 16,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.46 : 18,077.11 = 12,141.72 : x
  2. Step 2: Convert to fraction form
    13,091.46/18,077.11 = 12,141.72/x
  3. Step 3: Cross multiply
    13,091.46x = 18,077.11 × 12,141.72
  4. Step 4: Simplify right side
    13,091.46x = 219,487,208.03
  5. Step 5: Solve for x
    x = 219,487,208.03/13,091.46
  6. Step 6: Final answer
    x = 16,765.68

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1.5x scale

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.