Home / 12,190.91-18,288.92-6,928.38

Finding the Fourth Proportional to 12,190.91, 18,288.92 and 6,928.38

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Solution

The fourth proportional to 12,190.91, 18,288.92 and 6,928.38 is: 10,394.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.91 : 18,288.92 = 6,928.38 : x
  2. Step 2: Convert to fraction form
    12,190.91/18,288.92 = 6,928.38/x
  3. Step 3: Cross multiply
    12,190.91x = 18,288.92 × 6,928.38
  4. Step 4: Simplify right side
    12,190.91x = 126,712,587.55
  5. Step 5: Solve for x
    x = 126,712,587.55/12,190.91
  6. Step 6: Final answer
    x = 10,394.02

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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.