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Finding the Fourth Proportional to 29,365.78, 40,523.62 and 15,936.56

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Solution

The fourth proportional to 29,365.78, 40,523.62 and 15,936.56 is: 21,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,365.78 : 40,523.62 = 15,936.56 : x
  2. Step 2: Convert to fraction form
    29,365.78/40,523.62 = 15,936.56/x
  3. Step 3: Cross multiply
    29,365.78x = 40,523.62 × 15,936.56
  4. Step 4: Simplify right side
    29,365.78x = 645,807,101.55
  5. Step 5: Solve for x
    x = 645,807,101.55/29,365.78
  6. Step 6: Final answer
    x = 21,991.83

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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.