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Finding the Fourth Proportional to 12,855.54, 19,270.08 and 8,179.02

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Solution

The fourth proportional to 12,855.54, 19,270.08 and 8,179.02 is: 12,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.54 : 19,270.08 = 8,179.02 : x
  2. Step 2: Convert to fraction form
    12,855.54/19,270.08 = 8,179.02/x
  3. Step 3: Cross multiply
    12,855.54x = 19,270.08 × 8,179.02
  4. Step 4: Simplify right side
    12,855.54x = 157,610,369.72
  5. Step 5: Solve for x
    x = 157,610,369.72/12,855.54
  6. Step 6: Final answer
    x = 12,260.11

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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.