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Finding the Fourth Proportional to 21,891.87, 32,841.45 and 7,097.73

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Solution

The fourth proportional to 21,891.87, 32,841.45 and 7,097.73 is: 10,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.87 : 32,841.45 = 7,097.73 : x
  2. Step 2: Convert to fraction form
    21,891.87/32,841.45 = 7,097.73/x
  3. Step 3: Cross multiply
    21,891.87x = 32,841.45 × 7,097.73
  4. Step 4: Simplify right side
    21,891.87x = 233,099,621.75
  5. Step 5: Solve for x
    x = 233,099,621.75/21,891.87
  6. Step 6: Final answer
    x = 10,647.77

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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.