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Finding the Fourth Proportional to 19,081.62, 28,622.10 and 5,230.62

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Solution

The fourth proportional to 19,081.62, 28,622.10 and 5,230.62 is: 7,845.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081.62 : 28,622.10 = 5,230.62 : x
  2. Step 2: Convert to fraction form
    19,081.62/28,622.10 = 5,230.62/x
  3. Step 3: Cross multiply
    19,081.62x = 28,622.10 × 5,230.62
  4. Step 4: Simplify right side
    19,081.62x = 149,711,328.70
  5. Step 5: Solve for x
    x = 149,711,328.70/19,081.62
  6. Step 6: Final answer
    x = 7,845.84

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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.