Home / 11,918.79-17,886.20-6,376.05

Finding the Fourth Proportional to 11,918.79, 17,886.20 and 6,376.05

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Solution

The fourth proportional to 11,918.79, 17,886.20 and 6,376.05 is: 9,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.79 : 17,886.20 = 6,376.05 : x
  2. Step 2: Convert to fraction form
    11,918.79/17,886.20 = 6,376.05/x
  3. Step 3: Cross multiply
    11,918.79x = 17,886.20 × 6,376.05
  4. Step 4: Simplify right side
    11,918.79x = 114,043,273.63
  5. Step 5: Solve for x
    x = 114,043,273.63/11,918.79
  6. Step 6: Final answer
    x = 9,568.36

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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.