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Finding the Fourth Proportional to 15,334.53, 21,163.53 and 8,620.44

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Solution

The fourth proportional to 15,334.53, 21,163.53 and 8,620.44 is: 11,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.53 : 21,163.53 = 8,620.44 : x
  2. Step 2: Convert to fraction form
    15,334.53/21,163.53 = 8,620.44/x
  3. Step 3: Cross multiply
    15,334.53x = 21,163.53 × 8,620.44
  4. Step 4: Simplify right side
    15,334.53x = 182,438,940.55
  5. Step 5: Solve for x
    x = 182,438,940.55/15,334.53
  6. Step 6: Final answer
    x = 11,897.26

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1.5x scale

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.