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Finding the Third Proportional to 18,981,415.13 and 28,347,738.75

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Solution

The third proportional to 18,981,415.13 and 28,347,738.75 is: 42,335,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,415.13 : 28,347,738.75 = 28,347,738.75 : x
  2. Step 2: Convert to fraction form
    18,981,415.13/28,347,738.75 = 28,347,738.75/x
  3. Step 3: Cross multiply
    18,981,415.13x = 28,347,738.75 × 28,347,738.75
  4. Step 4: Simplify right side
    18,981,415.13x = 803,594,292,238,251.50
  5. Step 5: Solve for x
    x = 803,594,292,238,251.50/18,981,415.13
  6. Step 6: Final answer
    x = 42,335,847.30

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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.