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Finding the Third Proportional to 18,640.13 and 28,000.13

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Solution

The third proportional to 18,640.13 and 28,000.13 is: 42,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.13 : 28,000.13 = 28,000.13 : x
  2. Step 2: Convert to fraction form
    18,640.13/28,000.13 = 28,000.13/x
  3. Step 3: Cross multiply
    18,640.13x = 28,000.13 × 28,000.13
  4. Step 4: Simplify right side
    18,640.13x = 784,007,000.02
  5. Step 5: Solve for x
    x = 784,007,000.02/18,640.13
  6. Step 6: Final answer
    x = 42,060.18

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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.