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Finding the Fourth Proportional to 26,643.78, 36,772.02 and 15,465.78

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Solution

The fourth proportional to 26,643.78, 36,772.02 and 15,465.78 is: 21,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,643.78 : 36,772.02 = 15,465.78 : x
  2. Step 2: Convert to fraction form
    26,643.78/36,772.02 = 15,465.78/x
  3. Step 3: Cross multiply
    26,643.78x = 36,772.02 × 15,465.78
  4. Step 4: Simplify right side
    26,643.78x = 568,707,971.48
  5. Step 5: Solve for x
    x = 568,707,971.48/26,643.78
  6. Step 6: Final answer
    x = 21,344.87

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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.