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Finding the Fourth Proportional to 23,479.62, 35,212 and 7,681

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Solution

The fourth proportional to 23,479.62, 35,212 and 7,681 is: 11,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,479.62 : 35,212 = 7,681 : x
  2. Step 2: Convert to fraction form
    23,479.62/35,212 = 7,681/x
  3. Step 3: Cross multiply
    23,479.62x = 35,212 × 7,681
  4. Step 4: Simplify right side
    23,479.62x = 270,463,372
  5. Step 5: Solve for x
    x = 270,463,372/23,479.62
  6. Step 6: Final answer
    x = 11,519.07

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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.