Home / 12,189.91-18,287.42-6,927.38

Finding the Fourth Proportional to 12,189.91, 18,287.42 and 6,927.38

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Solution

The fourth proportional to 12,189.91, 18,287.42 and 6,927.38 is: 10,392.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.91 : 18,287.42 = 6,927.38 : x
  2. Step 2: Convert to fraction form
    12,189.91/18,287.42 = 6,927.38/x
  3. Step 3: Cross multiply
    12,189.91x = 18,287.42 × 6,927.38
  4. Step 4: Simplify right side
    12,189.91x = 126,683,901.89
  5. Step 5: Solve for x
    x = 126,683,901.89/12,189.91
  6. Step 6: Final answer
    x = 10,392.53

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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.