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Finding the Third Proportional to 8,360,855.44 and 12,921,866.72

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Solution

The third proportional to 8,360,855.44 and 12,921,866.72 is: 19,970,999.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360,855.44 : 12,921,866.72 = 12,921,866.72 : x
  2. Step 2: Convert to fraction form
    8,360,855.44/12,921,866.72 = 12,921,866.72/x
  3. Step 3: Cross multiply
    8,360,855.44x = 12,921,866.72 × 12,921,866.72
  4. Step 4: Simplify right side
    8,360,855.44x = 166,974,639,497,138.91
  5. Step 5: Solve for x
    x = 166,974,639,497,138.91/8,360,855.44
  6. Step 6: Final answer
    x = 19,970,999.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.