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Finding the Third Proportional to 13,688,568 and 21,318,534

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Solution

The third proportional to 13,688,568 and 21,318,534 is: 33,201,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688,568 : 21,318,534 = 21,318,534 : x
  2. Step 2: Convert to fraction form
    13,688,568/21,318,534 = 21,318,534/x
  3. Step 3: Cross multiply
    13,688,568x = 21,318,534 × 21,318,534
  4. Step 4: Simplify right side
    13,688,568x = 454,479,891,909,156
  5. Step 5: Solve for x
    x = 454,479,891,909,156/13,688,568
  6. Step 6: Final answer
    x = 33,201,419.75

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.