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Finding the Third Proportional to 20,609,620 and 27,989,856

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Solution

The third proportional to 20,609,620 and 27,989,856 is: 38,012,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609,620 : 27,989,856 = 27,989,856 : x
  2. Step 2: Convert to fraction form
    20,609,620/27,989,856 = 27,989,856/x
  3. Step 3: Cross multiply
    20,609,620x = 27,989,856 × 27,989,856
  4. Step 4: Simplify right side
    20,609,620x = 783,432,038,900,736
  5. Step 5: Solve for x
    x = 783,432,038,900,736/20,609,620
  6. Step 6: Final answer
    x = 38,012,929.83

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.