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Finding the Third Proportional to 18,975.94 and 28,360.76

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Solution

The third proportional to 18,975.94 and 28,360.76 is: 42,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.94 : 28,360.76 = 28,360.76 : x
  2. Step 2: Convert to fraction form
    18,975.94/28,360.76 = 28,360.76/x
  3. Step 3: Cross multiply
    18,975.94x = 28,360.76 × 28,360.76
  4. Step 4: Simplify right side
    18,975.94x = 804,332,583.70
  5. Step 5: Solve for x
    x = 804,332,583.70/18,975.94
  6. Step 6: Final answer
    x = 42,386.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.