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Finding the Third Proportional to 13,431 and 19,737

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Solution

The third proportional to 13,431 and 19,737 is: 29,003.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431 : 19,737 = 19,737 : x
  2. Step 2: Convert to fraction form
    13,431/19,737 = 19,737/x
  3. Step 3: Cross multiply
    13,431x = 19,737 × 19,737
  4. Step 4: Simplify right side
    13,431x = 389,549,169
  5. Step 5: Solve for x
    x = 389,549,169/13,431
  6. Step 6: Final answer
    x = 29,003.74

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.