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Finding the Fourth Proportional to 12,936,436.80, 19,404,712.80 and 3,351,134.40

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Solution

The fourth proportional to 12,936,436.80, 19,404,712.80 and 3,351,134.40 is: 5,026,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936,436.80 : 19,404,712.80 = 3,351,134.40 : x
  2. Step 2: Convert to fraction form
    12,936,436.80/19,404,712.80 = 3,351,134.40/x
  3. Step 3: Cross multiply
    12,936,436.80x = 19,404,712.80 × 3,351,134.40
  4. Step 4: Simplify right side
    12,936,436.80x = 65,027,800,586,200.32
  5. Step 5: Solve for x
    x = 65,027,800,586,200.32/12,936,436.80
  6. Step 6: Final answer
    x = 5,026,716.52

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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.