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Finding the Fourth Proportional to 18,706.74, 28,049.58 and 6,220.08

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Solution

The fourth proportional to 18,706.74, 28,049.58 and 6,220.08 is: 9,326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.74 : 28,049.58 = 6,220.08 : x
  2. Step 2: Convert to fraction form
    18,706.74/28,049.58 = 6,220.08/x
  3. Step 3: Cross multiply
    18,706.74x = 28,049.58 × 6,220.08
  4. Step 4: Simplify right side
    18,706.74x = 174,470,631.57
  5. Step 5: Solve for x
    x = 174,470,631.57/18,706.74
  6. Step 6: Final answer
    x = 9,326.62

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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.