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Finding the Fourth Proportional to 15,469.56, 21,348.01 and 8,395.99

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Solution

The fourth proportional to 15,469.56, 21,348.01 and 8,395.99 is: 11,586.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.56 : 21,348.01 = 8,395.99 : x
  2. Step 2: Convert to fraction form
    15,469.56/21,348.01 = 8,395.99/x
  3. Step 3: Cross multiply
    15,469.56x = 21,348.01 × 8,395.99
  4. Step 4: Simplify right side
    15,469.56x = 179,237,604.12
  5. Step 5: Solve for x
    x = 179,237,604.12/15,469.56
  6. Step 6: Final answer
    x = 11,586.47

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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.