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Finding the Third Proportional to 8,911,968 and 12,992,400

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Solution

The third proportional to 8,911,968 and 12,992,400 is: 18,941,097.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911,968 : 12,992,400 = 12,992,400 : x
  2. Step 2: Convert to fraction form
    8,911,968/12,992,400 = 12,992,400/x
  3. Step 3: Cross multiply
    8,911,968x = 12,992,400 × 12,992,400
  4. Step 4: Simplify right side
    8,911,968x = 168,802,457,760,000
  5. Step 5: Solve for x
    x = 168,802,457,760,000/8,911,968
  6. Step 6: Final answer
    x = 18,941,097.83

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.