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Finding the Fourth Proportional to 8,687.68, 13,032.11 and 4,303.96

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Solution

The fourth proportional to 8,687.68, 13,032.11 and 4,303.96 is: 6,456.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.68 : 13,032.11 = 4,303.96 : x
  2. Step 2: Convert to fraction form
    8,687.68/13,032.11 = 4,303.96/x
  3. Step 3: Cross multiply
    8,687.68x = 13,032.11 × 4,303.96
  4. Step 4: Simplify right side
    8,687.68x = 56,089,626.06
  5. Step 5: Solve for x
    x = 56,089,626.06/8,687.68
  6. Step 6: Final answer
    x = 6,456.23

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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.