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Finding the Fourth Proportional to 15,627.68, 21,566 and 8,553.68

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Solution

The fourth proportional to 15,627.68, 21,566 and 8,553.68 is: 11,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.68 : 21,566 = 8,553.68 : x
  2. Step 2: Convert to fraction form
    15,627.68/21,566 = 8,553.68/x
  3. Step 3: Cross multiply
    15,627.68x = 21,566 × 8,553.68
  4. Step 4: Simplify right side
    15,627.68x = 184,468,662.88
  5. Step 5: Solve for x
    x = 184,468,662.88/15,627.68
  6. Step 6: Final answer
    x = 11,803.97

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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.