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Finding the Fourth Proportional to 19,873.77, 29,810.65 and 8,791.75

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Solution

The fourth proportional to 19,873.77, 29,810.65 and 8,791.75 is: 13,187.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.77 : 29,810.65 = 8,791.75 : x
  2. Step 2: Convert to fraction form
    19,873.77/29,810.65 = 8,791.75/x
  3. Step 3: Cross multiply
    19,873.77x = 29,810.65 × 8,791.75
  4. Step 4: Simplify right side
    19,873.77x = 262,087,782.14
  5. Step 5: Solve for x
    x = 262,087,782.14/19,873.77
  6. Step 6: Final answer
    x = 13,187.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.