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Finding the Fourth Proportional to 15,469.50, 21,348 and 8,395.98

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Solution

The fourth proportional to 15,469.50, 21,348 and 8,395.98 is: 11,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.50 : 21,348 = 8,395.98 : x
  2. Step 2: Convert to fraction form
    15,469.50/21,348 = 8,395.98/x
  3. Step 3: Cross multiply
    15,469.50x = 21,348 × 8,395.98
  4. Step 4: Simplify right side
    15,469.50x = 179,237,381.04
  5. Step 5: Solve for x
    x = 179,237,381.04/15,469.50
  6. Step 6: Final answer
    x = 11,586.50

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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.