Home / 13,643.22-20,462.78-3,781.46

Finding the Fourth Proportional to 13,643.22, 20,462.78 and 3,781.46

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Solution

The fourth proportional to 13,643.22, 20,462.78 and 3,781.46 is: 5,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.22 : 20,462.78 = 3,781.46 : x
  2. Step 2: Convert to fraction form
    13,643.22/20,462.78 = 3,781.46/x
  3. Step 3: Cross multiply
    13,643.22x = 20,462.78 × 3,781.46
  4. Step 4: Simplify right side
    13,643.22x = 77,379,184.06
  5. Step 5: Solve for x
    x = 77,379,184.06/13,643.22
  6. Step 6: Final answer
    x = 5,671.62

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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.