Home / 13,781.07-20,671.61-3,392.82

Finding the Fourth Proportional to 13,781.07, 20,671.61 and 3,392.82

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Solution

The fourth proportional to 13,781.07, 20,671.61 and 3,392.82 is: 5,089.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.07 : 20,671.61 = 3,392.82 : x
  2. Step 2: Convert to fraction form
    13,781.07/20,671.61 = 3,392.82/x
  3. Step 3: Cross multiply
    13,781.07x = 20,671.61 × 3,392.82
  4. Step 4: Simplify right side
    13,781.07x = 70,135,034.88
  5. Step 5: Solve for x
    x = 70,135,034.88/13,781.07
  6. Step 6: Final answer
    x = 5,089.23

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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.