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Finding the Fourth Proportional to 14,790.61, 20,410.72 and 8,076.43

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Solution

The fourth proportional to 14,790.61, 20,410.72 and 8,076.43 is: 11,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,790.61 : 20,410.72 = 8,076.43 : x
  2. Step 2: Convert to fraction form
    14,790.61/20,410.72 = 8,076.43/x
  3. Step 3: Cross multiply
    14,790.61x = 20,410.72 × 8,076.43
  4. Step 4: Simplify right side
    14,790.61x = 164,845,751.33
  5. Step 5: Solve for x
    x = 164,845,751.33/14,790.61
  6. Step 6: Final answer
    x = 11,145.30

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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.