Home / 11,912.49-17,882.78-6,985.89

Finding the Fourth Proportional to 11,912.49, 17,882.78 and 6,985.89

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Solution

The fourth proportional to 11,912.49, 17,882.78 and 6,985.89 is: 10,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.49 : 17,882.78 = 6,985.89 : x
  2. Step 2: Convert to fraction form
    11,912.49/17,882.78 = 6,985.89/x
  3. Step 3: Cross multiply
    11,912.49x = 17,882.78 × 6,985.89
  4. Step 4: Simplify right side
    11,912.49x = 124,927,099.04
  5. Step 5: Solve for x
    x = 124,927,099.04/11,912.49
  6. Step 6: Final answer
    x = 10,487.07

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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.