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Finding the Third Proportional to 13,339 and 19,981.50

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Solution

The third proportional to 13,339 and 19,981.50 is: 29,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339 : 19,981.50 = 19,981.50 : x
  2. Step 2: Convert to fraction form
    13,339/19,981.50 = 19,981.50/x
  3. Step 3: Cross multiply
    13,339x = 19,981.50 × 19,981.50
  4. Step 4: Simplify right side
    13,339x = 399,260,342.25
  5. Step 5: Solve for x
    x = 399,260,342.25/13,339
  6. Step 6: Final answer
    x = 29,931.80

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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.