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Finding the Third Proportional to 13,490.30 and 18,988.17

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Solution

The third proportional to 13,490.30 and 18,988.17 is: 26,726.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.30 : 18,988.17 = 18,988.17 : x
  2. Step 2: Convert to fraction form
    13,490.30/18,988.17 = 18,988.17/x
  3. Step 3: Cross multiply
    13,490.30x = 18,988.17 × 18,988.17
  4. Step 4: Simplify right side
    13,490.30x = 360,550,671.15
  5. Step 5: Solve for x
    x = 360,550,671.15/13,490.30
  6. Step 6: Final answer
    x = 26,726.67

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.