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Finding the Fourth Proportional to 22,718.88, 34,040.52 and 7,919.64

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Solution

The fourth proportional to 22,718.88, 34,040.52 and 7,919.64 is: 11,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,718.88 : 34,040.52 = 7,919.64 : x
  2. Step 2: Convert to fraction form
    22,718.88/34,040.52 = 7,919.64/x
  3. Step 3: Cross multiply
    22,718.88x = 34,040.52 × 7,919.64
  4. Step 4: Simplify right side
    22,718.88x = 269,588,663.81
  5. Step 5: Solve for x
    x = 269,588,663.81/22,718.88
  6. Step 6: Final answer
    x = 11,866.28

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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.