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Finding the Fourth Proportional to 13,588.54, 18,755.52 and 8,286.28

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Solution

The fourth proportional to 13,588.54, 18,755.52 and 8,286.28 is: 11,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.54 : 18,755.52 = 8,286.28 : x
  2. Step 2: Convert to fraction form
    13,588.54/18,755.52 = 8,286.28/x
  3. Step 3: Cross multiply
    13,588.54x = 18,755.52 × 8,286.28
  4. Step 4: Simplify right side
    13,588.54x = 155,413,490.27
  5. Step 5: Solve for x
    x = 155,413,490.27/13,588.54
  6. Step 6: Final answer
    x = 11,437.10

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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.