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Finding the Fourth Proportional to 18,706.20, 28,063.88 and 6,226.20

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Solution

The fourth proportional to 18,706.20, 28,063.88 and 6,226.20 is: 9,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.20 : 28,063.88 = 6,226.20 : x
  2. Step 2: Convert to fraction form
    18,706.20/28,063.88 = 6,226.20/x
  3. Step 3: Cross multiply
    18,706.20x = 28,063.88 × 6,226.20
  4. Step 4: Simplify right side
    18,706.20x = 174,731,298.53
  5. Step 5: Solve for x
    x = 174,731,298.53/18,706.20
  6. Step 6: Final answer
    x = 9,340.82

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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.