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Finding the Third Proportional to 15,220,343.92 and 20,678,708.64

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Solution

The third proportional to 15,220,343.92 and 20,678,708.64 is: 28,094,568.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220,343.92 : 20,678,708.64 = 20,678,708.64 : x
  2. Step 2: Convert to fraction form
    15,220,343.92/20,678,708.64 = 20,678,708.64/x
  3. Step 3: Cross multiply
    15,220,343.92x = 20,678,708.64 × 20,678,708.64
  4. Step 4: Simplify right side
    15,220,343.92x = 427,608,990,882,316.94
  5. Step 5: Solve for x
    x = 427,608,990,882,316.94/15,220,343.92
  6. Step 6: Final answer
    x = 28,094,568.24

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.