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Finding the Third Proportional to 13,334.63 and 20,639.81

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Solution

The third proportional to 13,334.63 and 20,639.81 is: 31,947.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,334.63 : 20,639.81 = 20,639.81 : x
  2. Step 2: Convert to fraction form
    13,334.63/20,639.81 = 20,639.81/x
  3. Step 3: Cross multiply
    13,334.63x = 20,639.81 × 20,639.81
  4. Step 4: Simplify right side
    13,334.63x = 426,001,860.04
  5. Step 5: Solve for x
    x = 426,001,860.04/13,334.63
  6. Step 6: Final answer
    x = 31,947.04

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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.