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Finding the Third Proportional to 12,429,979.03 and 18,816,879.66

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Solution

The third proportional to 12,429,979.03 and 18,816,879.66 is: 28,485,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429,979.03 : 18,816,879.66 = 18,816,879.66 : x
  2. Step 2: Convert to fraction form
    12,429,979.03/18,816,879.66 = 18,816,879.66/x
  3. Step 3: Cross multiply
    12,429,979.03x = 18,816,879.66 × 18,816,879.66
  4. Step 4: Simplify right side
    12,429,979.03x = 354,074,959,997,795.12
  5. Step 5: Solve for x
    x = 354,074,959,997,795.12/12,429,979.03
  6. Step 6: Final answer
    x = 28,485,563.74

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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.