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Finding the Third Proportional to 13,145.63 and 19,855.13

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Solution

The third proportional to 13,145.63 and 19,855.13 is: 29,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.63 : 19,855.13 = 19,855.13 : x
  2. Step 2: Convert to fraction form
    13,145.63/19,855.13 = 19,855.13/x
  3. Step 3: Cross multiply
    13,145.63x = 19,855.13 × 19,855.13
  4. Step 4: Simplify right side
    13,145.63x = 394,225,988.77
  5. Step 5: Solve for x
    x = 394,225,988.77/13,145.63
  6. Step 6: Final answer
    x = 29,989.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.