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Finding the Fourth Proportional to 19,790,438.40, 27,310,694.40 and 11,205,734.40

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Solution

The fourth proportional to 19,790,438.40, 27,310,694.40 and 11,205,734.40 is: 15,463,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790,438.40 : 27,310,694.40 = 11,205,734.40 : x
  2. Step 2: Convert to fraction form
    19,790,438.40/27,310,694.40 = 11,205,734.40/x
  3. Step 3: Cross multiply
    19,790,438.40x = 27,310,694.40 × 11,205,734.40
  4. Step 4: Simplify right side
    19,790,438.40x = 306,036,387,725,967.38
  5. Step 5: Solve for x
    x = 306,036,387,725,967.38/19,790,438.40
  6. Step 6: Final answer
    x = 15,463,850.85

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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.