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Finding the Third Proportional to 13,698 and 20,913.75

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Solution

The third proportional to 13,698 and 20,913.75 is: 31,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698 : 20,913.75 = 20,913.75 : x
  2. Step 2: Convert to fraction form
    13,698/20,913.75 = 20,913.75/x
  3. Step 3: Cross multiply
    13,698x = 20,913.75 × 20,913.75
  4. Step 4: Simplify right side
    13,698x = 437,384,939.06
  5. Step 5: Solve for x
    x = 437,384,939.06/13,698
  6. Step 6: Final answer
    x = 31,930.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.