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Finding the Fourth Proportional to 19,797.87, 27,321.20 and 10,845.42

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Solution

The fourth proportional to 19,797.87, 27,321.20 and 10,845.42 is: 14,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,797.87 : 27,321.20 = 10,845.42 : x
  2. Step 2: Convert to fraction form
    19,797.87/27,321.20 = 10,845.42/x
  3. Step 3: Cross multiply
    19,797.87x = 27,321.20 × 10,845.42
  4. Step 4: Simplify right side
    19,797.87x = 296,309,888.90
  5. Step 5: Solve for x
    x = 296,309,888.90/19,797.87
  6. Step 6: Final answer
    x = 14,966.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.