Home / 11,912.23-16,401.45-10,115.92

Finding the Fourth Proportional to 11,912.23, 16,401.45 and 10,115.92

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Solution

The fourth proportional to 11,912.23, 16,401.45 and 10,115.92 is: 13,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.23 : 16,401.45 = 10,115.92 : x
  2. Step 2: Convert to fraction form
    11,912.23/16,401.45 = 10,115.92/x
  3. Step 3: Cross multiply
    11,912.23x = 16,401.45 × 10,115.92
  4. Step 4: Simplify right side
    11,912.23x = 165,915,756.08
  5. Step 5: Solve for x
    x = 165,915,756.08/11,912.23
  6. Step 6: Final answer
    x = 13,928.19

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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.