Home / 13,794.57-20,685.78-3,931.61

Finding the Fourth Proportional to 13,794.57, 20,685.78 and 3,931.61

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Solution

The fourth proportional to 13,794.57, 20,685.78 and 3,931.61 is: 5,895.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.57 : 20,685.78 = 3,931.61 : x
  2. Step 2: Convert to fraction form
    13,794.57/20,685.78 = 3,931.61/x
  3. Step 3: Cross multiply
    13,794.57x = 20,685.78 × 3,931.61
  4. Step 4: Simplify right side
    13,794.57x = 81,328,316.08
  5. Step 5: Solve for x
    x = 81,328,316.08/13,794.57
  6. Step 6: Final answer
    x = 5,895.68

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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.