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Finding the Third Proportional to 13,453,981 and 20,872,028

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Solution

The third proportional to 13,453,981 and 20,872,028 is: 32,380,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453,981 : 20,872,028 = 20,872,028 : x
  2. Step 2: Convert to fraction form
    13,453,981/20,872,028 = 20,872,028/x
  3. Step 3: Cross multiply
    13,453,981x = 20,872,028 × 20,872,028
  4. Step 4: Simplify right side
    13,453,981x = 435,641,552,832,784
  5. Step 5: Solve for x
    x = 435,641,552,832,784/13,453,981
  6. Step 6: Final answer
    x = 32,380,122.50

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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.