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Finding the Fourth Proportional to 29,639.00, 40,863.74 and 21,151.01

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Solution

The fourth proportional to 29,639.00, 40,863.74 and 21,151.01 is: 29,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,639.00 : 40,863.74 = 21,151.01 : x
  2. Step 2: Convert to fraction form
    29,639.00/40,863.74 = 21,151.01/x
  3. Step 3: Cross multiply
    29,639.00x = 40,863.74 × 21,151.01
  4. Step 4: Simplify right side
    29,639.00x = 864,309,063.30
  5. Step 5: Solve for x
    x = 864,309,063.30/29,639.00
  6. Step 6: Final answer
    x = 29,161.21

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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.