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Finding the Fourth Proportional to 19,855.80, 27,400.88 and 10,903.44

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Solution

The fourth proportional to 19,855.80, 27,400.88 and 10,903.44 is: 15,046.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.80 : 27,400.88 = 10,903.44 : x
  2. Step 2: Convert to fraction form
    19,855.80/27,400.88 = 10,903.44/x
  3. Step 3: Cross multiply
    19,855.80x = 27,400.88 × 10,903.44
  4. Step 4: Simplify right side
    19,855.80x = 298,763,851.03
  5. Step 5: Solve for x
    x = 298,763,851.03/19,855.80
  6. Step 6: Final answer
    x = 15,046.68

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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.