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Finding the Fourth Proportional to 10,992,944.70, 16,489,417.05 and 8,264,880.90

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Solution

The fourth proportional to 10,992,944.70, 16,489,417.05 and 8,264,880.90 is: 12,397,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992,944.70 : 16,489,417.05 = 8,264,880.90 : x
  2. Step 2: Convert to fraction form
    10,992,944.70/16,489,417.05 = 8,264,880.90/x
  3. Step 3: Cross multiply
    10,992,944.70x = 16,489,417.05 × 8,264,880.90
  4. Step 4: Simplify right side
    10,992,944.70x = 136,283,068,028,679.36
  5. Step 5: Solve for x
    x = 136,283,068,028,679.36/10,992,944.70
  6. Step 6: Final answer
    x = 12,397,321.35

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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.