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Finding the Fourth Proportional to 18,411.87, 27,609.58 and 6,716.88

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Solution

The fourth proportional to 18,411.87, 27,609.58 and 6,716.88 is: 10,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.87 : 27,609.58 = 6,716.88 : x
  2. Step 2: Convert to fraction form
    18,411.87/27,609.58 = 6,716.88/x
  3. Step 3: Cross multiply
    18,411.87x = 27,609.58 × 6,716.88
  4. Step 4: Simplify right side
    18,411.87x = 185,450,235.71
  5. Step 5: Solve for x
    x = 185,450,235.71/18,411.87
  6. Step 6: Final answer
    x = 10,072.32

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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.