Home / 11,968.29-17,961.71-8,275.91

Finding the Fourth Proportional to 11,968.29, 17,961.71 and 8,275.91

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Solution

The fourth proportional to 11,968.29, 17,961.71 and 8,275.91 is: 12,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968.29 : 17,961.71 = 8,275.91 : x
  2. Step 2: Convert to fraction form
    11,968.29/17,961.71 = 8,275.91/x
  3. Step 3: Cross multiply
    11,968.29x = 17,961.71 × 8,275.91
  4. Step 4: Simplify right side
    11,968.29x = 148,649,364.22
  5. Step 5: Solve for x
    x = 148,649,364.22/11,968.29
  6. Step 6: Final answer
    x = 12,420.27

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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.