Home / 13,444.29-20,170.55-12,121.86

Finding the Fourth Proportional to 13,444.29, 20,170.55 and 12,121.86

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Solution

The fourth proportional to 13,444.29, 20,170.55 and 12,121.86 is: 18,186.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,444.29 : 20,170.55 = 12,121.86 : x
  2. Step 2: Convert to fraction form
    13,444.29/20,170.55 = 12,121.86/x
  3. Step 3: Cross multiply
    13,444.29x = 20,170.55 × 12,121.86
  4. Step 4: Simplify right side
    13,444.29x = 244,504,689.17
  5. Step 5: Solve for x
    x = 244,504,689.17/13,444.29
  6. Step 6: Final answer
    x = 18,186.51

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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.