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Finding the Fourth Proportional to 21,073.36, 29,078.76 and 11,641.36

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Solution

The fourth proportional to 21,073.36, 29,078.76 and 11,641.36 is: 16,063.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.36 : 29,078.76 = 11,641.36 : x
  2. Step 2: Convert to fraction form
    21,073.36/29,078.76 = 11,641.36/x
  3. Step 3: Cross multiply
    21,073.36x = 29,078.76 × 11,641.36
  4. Step 4: Simplify right side
    21,073.36x = 338,516,313.51
  5. Step 5: Solve for x
    x = 338,516,313.51/21,073.36
  6. Step 6: Final answer
    x = 16,063.71

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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.