Home / 19,850.81-27,406.97-12,305.18

Finding the Fourth Proportional to 19,850.81, 27,406.97 and 12,305.18

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Solution

The fourth proportional to 19,850.81, 27,406.97 and 12,305.18 is: 16,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,850.81 : 27,406.97 = 12,305.18 : x
  2. Step 2: Convert to fraction form
    19,850.81/27,406.97 = 12,305.18/x
  3. Step 3: Cross multiply
    19,850.81x = 27,406.97 × 12,305.18
  4. Step 4: Simplify right side
    19,850.81x = 337,247,500.54
  5. Step 5: Solve for x
    x = 337,247,500.54/19,850.81
  6. Step 6: Final answer
    x = 16,989.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.