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Finding the Fourth Proportional to 36,921.29, 50,950.72 and 21,005.39

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Solution

The fourth proportional to 36,921.29, 50,950.72 and 21,005.39 is: 28,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,921.29 : 50,950.72 = 21,005.39 : x
  2. Step 2: Convert to fraction form
    36,921.29/50,950.72 = 21,005.39/x
  3. Step 3: Cross multiply
    36,921.29x = 50,950.72 × 21,005.39
  4. Step 4: Simplify right side
    36,921.29x = 1,070,239,898.01
  5. Step 5: Solve for x
    x = 1,070,239,898.01/36,921.29
  6. Step 6: Final answer
    x = 28,987.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.