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Finding the Fourth Proportional to 10,995, 15,179.94 and 7,636.68

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Solution

The fourth proportional to 10,995, 15,179.94 and 7,636.68 is: 10,543.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995 : 15,179.94 = 7,636.68 : x
  2. Step 2: Convert to fraction form
    10,995/15,179.94 = 7,636.68/x
  3. Step 3: Cross multiply
    10,995x = 15,179.94 × 7,636.68
  4. Step 4: Simplify right side
    10,995x = 115,924,344.20
  5. Step 5: Solve for x
    x = 115,924,344.20/10,995
  6. Step 6: Final answer
    x = 10,543.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.