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Finding the Fourth Proportional to 14,760, 20,368.90 and 8,791.92

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Solution

The fourth proportional to 14,760, 20,368.90 and 8,791.92 is: 12,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,760 : 20,368.90 = 8,791.92 : x
  2. Step 2: Convert to fraction form
    14,760/20,368.90 = 8,791.92/x
  3. Step 3: Cross multiply
    14,760x = 20,368.90 × 8,791.92
  4. Step 4: Simplify right side
    14,760x = 179,081,739.29
  5. Step 5: Solve for x
    x = 179,081,739.29/14,760
  6. Step 6: Final answer
    x = 12,132.91

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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.