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Finding the Third Proportional to 18,521,742 and 20,736,078

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Solution

The third proportional to 18,521,742 and 20,736,078 is: 23,215,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521,742 : 20,736,078 = 20,736,078 : x
  2. Step 2: Convert to fraction form
    18,521,742/20,736,078 = 20,736,078/x
  3. Step 3: Cross multiply
    18,521,742x = 20,736,078 × 20,736,078
  4. Step 4: Simplify right side
    18,521,742x = 429,984,930,822,084
  5. Step 5: Solve for x
    x = 429,984,930,822,084/18,521,742
  6. Step 6: Final answer
    x = 23,215,145.25

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.