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Finding the Fourth Proportional to 8,685.74, 13,014.92 and 6,716.18

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Solution

The fourth proportional to 8,685.74, 13,014.92 and 6,716.18 is: 10,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.74 : 13,014.92 = 6,716.18 : x
  2. Step 2: Convert to fraction form
    8,685.74/13,014.92 = 6,716.18/x
  3. Step 3: Cross multiply
    8,685.74x = 13,014.92 × 6,716.18
  4. Step 4: Simplify right side
    8,685.74x = 87,410,545.41
  5. Step 5: Solve for x
    x = 87,410,545.41/8,685.74
  6. Step 6: Final answer
    x = 10,063.68

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1.5x scale

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.