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Finding the Third Proportional to 13,897 and 20,807.50

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Solution

The third proportional to 13,897 and 20,807.50 is: 31,154.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897 : 20,807.50 = 20,807.50 : x
  2. Step 2: Convert to fraction form
    13,897/20,807.50 = 20,807.50/x
  3. Step 3: Cross multiply
    13,897x = 20,807.50 × 20,807.50
  4. Step 4: Simplify right side
    13,897x = 432,952,056.25
  5. Step 5: Solve for x
    x = 432,952,056.25/13,897
  6. Step 6: Final answer
    x = 31,154.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.