Home / 11,905.49-17,856.47-3,141.02

Finding the Fourth Proportional to 11,905.49, 17,856.47 and 3,141.02

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Solution

The fourth proportional to 11,905.49, 17,856.47 and 3,141.02 is: 4,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.49 : 17,856.47 = 3,141.02 : x
  2. Step 2: Convert to fraction form
    11,905.49/17,856.47 = 3,141.02/x
  3. Step 3: Cross multiply
    11,905.49x = 17,856.47 × 3,141.02
  4. Step 4: Simplify right side
    11,905.49x = 56,087,447.97
  5. Step 5: Solve for x
    x = 56,087,447.97/11,905.49
  6. Step 6: Final answer
    x = 4,711.06

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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.