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Finding the Fourth Proportional to 12,702, 19,003.79 and 8,522.10

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Solution

The fourth proportional to 12,702, 19,003.79 and 8,522.10 is: 12,750.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702 : 19,003.79 = 8,522.10 : x
  2. Step 2: Convert to fraction form
    12,702/19,003.79 = 8,522.10/x
  3. Step 3: Cross multiply
    12,702x = 19,003.79 × 8,522.10
  4. Step 4: Simplify right side
    12,702x = 161,952,198.76
  5. Step 5: Solve for x
    x = 161,952,198.76/12,702
  6. Step 6: Final answer
    x = 12,750.13

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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.