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Finding the Fourth Proportional to 14,761.86, 20,370.64 and 8,387.62

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Solution

The fourth proportional to 14,761.86, 20,370.64 and 8,387.62 is: 11,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,761.86 : 20,370.64 = 8,387.62 : x
  2. Step 2: Convert to fraction form
    14,761.86/20,370.64 = 8,387.62/x
  3. Step 3: Cross multiply
    14,761.86x = 20,370.64 × 8,387.62
  4. Step 4: Simplify right side
    14,761.86x = 170,861,187.48
  5. Step 5: Solve for x
    x = 170,861,187.48/14,761.86
  6. Step 6: Final answer
    x = 11,574.50

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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.