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Finding the Fourth Proportional to 19,796,310.10, 29,694,465.15 and 12,993,865.30

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Solution

The fourth proportional to 19,796,310.10, 29,694,465.15 and 12,993,865.30 is: 19,490,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,796,310.10 : 29,694,465.15 = 12,993,865.30 : x
  2. Step 2: Convert to fraction form
    19,796,310.10/29,694,465.15 = 12,993,865.30/x
  3. Step 3: Cross multiply
    19,796,310.10x = 29,694,465.15 × 12,993,865.30
  4. Step 4: Simplify right side
    19,796,310.10x = 385,845,880,314,644.31
  5. Step 5: Solve for x
    x = 385,845,880,314,644.31/19,796,310.10
  6. Step 6: Final answer
    x = 19,490,797.95

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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.