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Finding the Fourth Proportional to 15,469.00, 21,347.73 and 8,754.55

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Solution

The fourth proportional to 15,469.00, 21,347.73 and 8,754.55 is: 12,081.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.00 : 21,347.73 = 8,754.55 : x
  2. Step 2: Convert to fraction form
    15,469.00/21,347.73 = 8,754.55/x
  3. Step 3: Cross multiply
    15,469.00x = 21,347.73 × 8,754.55
  4. Step 4: Simplify right side
    15,469.00x = 186,889,716.30
  5. Step 5: Solve for x
    x = 186,889,716.30/15,469.00
  6. Step 6: Final answer
    x = 12,081.57

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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.