Home / 13,671.37-20,507.78-3,810.61

Finding the Fourth Proportional to 13,671.37, 20,507.78 and 3,810.61

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Solution

The fourth proportional to 13,671.37, 20,507.78 and 3,810.61 is: 5,716.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.37 : 20,507.78 = 3,810.61 : x
  2. Step 2: Convert to fraction form
    13,671.37/20,507.78 = 3,810.61/x
  3. Step 3: Cross multiply
    13,671.37x = 20,507.78 × 3,810.61
  4. Step 4: Simplify right side
    13,671.37x = 78,147,151.55
  5. Step 5: Solve for x
    x = 78,147,151.55/13,671.37
  6. Step 6: Final answer
    x = 5,716.12

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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.