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Finding the Fourth Proportional to 14,065.66, 21,087.96 and 8,517.66

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Solution

The fourth proportional to 14,065.66, 21,087.96 and 8,517.66 is: 12,770.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,065.66 : 21,087.96 = 8,517.66 : x
  2. Step 2: Convert to fraction form
    14,065.66/21,087.96 = 8,517.66/x
  3. Step 3: Cross multiply
    14,065.66x = 21,087.96 × 8,517.66
  4. Step 4: Simplify right side
    14,065.66x = 179,620,073.37
  5. Step 5: Solve for x
    x = 179,620,073.37/14,065.66
  6. Step 6: Final answer
    x = 12,770.11

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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.