Home / 12,882.28-19,336.38-9,409

Finding the Fourth Proportional to 12,882.28, 19,336.38 and 9,409

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Solution

The fourth proportional to 12,882.28, 19,336.38 and 9,409 is: 14,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.28 : 19,336.38 = 9,409 : x
  2. Step 2: Convert to fraction form
    12,882.28/19,336.38 = 9,409/x
  3. Step 3: Cross multiply
    12,882.28x = 19,336.38 × 9,409
  4. Step 4: Simplify right side
    12,882.28x = 181,935,999.42
  5. Step 5: Solve for x
    x = 181,935,999.42/12,882.28
  6. Step 6: Final answer
    x = 14,122.97

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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.