Home / 11,917.40-17,857.84-6,371.52

Finding the Fourth Proportional to 11,917.40, 17,857.84 and 6,371.52

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Solution

The fourth proportional to 11,917.40, 17,857.84 and 6,371.52 is: 9,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.40 : 17,857.84 = 6,371.52 : x
  2. Step 2: Convert to fraction form
    11,917.40/17,857.84 = 6,371.52/x
  3. Step 3: Cross multiply
    11,917.40x = 17,857.84 × 6,371.52
  4. Step 4: Simplify right side
    11,917.40x = 113,781,584.72
  5. Step 5: Solve for x
    x = 113,781,584.72/11,917.40
  6. Step 6: Final answer
    x = 9,547.52

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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.