Home / 12,882.78-19,301.45-11,283.66

Finding the Fourth Proportional to 12,882.78, 19,301.45 and 11,283.66

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Solution

The fourth proportional to 12,882.78, 19,301.45 and 11,283.66 is: 16,905.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.78 : 19,301.45 = 11,283.66 : x
  2. Step 2: Convert to fraction form
    12,882.78/19,301.45 = 11,283.66/x
  3. Step 3: Cross multiply
    12,882.78x = 19,301.45 × 11,283.66
  4. Step 4: Simplify right side
    12,882.78x = 217,790,942.89
  5. Step 5: Solve for x
    x = 217,790,942.89/12,882.78
  6. Step 6: Final answer
    x = 16,905.59

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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.