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Finding the Fourth Proportional to 13,391.55, 20,091.51 and 8,060.55

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Solution

The fourth proportional to 13,391.55, 20,091.51 and 8,060.55 is: 12,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.55 : 20,091.51 = 8,060.55 : x
  2. Step 2: Convert to fraction form
    13,391.55/20,091.51 = 8,060.55/x
  3. Step 3: Cross multiply
    13,391.55x = 20,091.51 × 8,060.55
  4. Step 4: Simplify right side
    13,391.55x = 161,948,620.93
  5. Step 5: Solve for x
    x = 161,948,620.93/13,391.55
  6. Step 6: Final answer
    x = 12,093.34

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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.