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Finding the Fourth Proportional to 12,797.78, 19,164.58 and 8,103.62

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Solution

The fourth proportional to 12,797.78, 19,164.58 and 8,103.62 is: 12,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.78 : 19,164.58 = 8,103.62 : x
  2. Step 2: Convert to fraction form
    12,797.78/19,164.58 = 8,103.62/x
  3. Step 3: Cross multiply
    12,797.78x = 19,164.58 × 8,103.62
  4. Step 4: Simplify right side
    12,797.78x = 155,302,473.78
  5. Step 5: Solve for x
    x = 155,302,473.78/12,797.78
  6. Step 6: Final answer
    x = 12,135.11

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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.