Home / 11,905.61-17,856.66-3,141.14

Finding the Fourth Proportional to 11,905.61, 17,856.66 and 3,141.14

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Solution

The fourth proportional to 11,905.61, 17,856.66 and 3,141.14 is: 4,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.61 : 17,856.66 = 3,141.14 : x
  2. Step 2: Convert to fraction form
    11,905.61/17,856.66 = 3,141.14/x
  3. Step 3: Cross multiply
    11,905.61x = 17,856.66 × 3,141.14
  4. Step 4: Simplify right side
    11,905.61x = 56,090,268.99
  5. Step 5: Solve for x
    x = 56,090,268.99/11,905.61
  6. Step 6: Final answer
    x = 4,711.25

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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.