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Finding the Third Proportional to 8,639,538.47 and 18,508,717.69

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Solution

The third proportional to 8,639,538.47 and 18,508,717.69 is: 39,651,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639,538.47 : 18,508,717.69 = 18,508,717.69 : x
  2. Step 2: Convert to fraction form
    8,639,538.47/18,508,717.69 = 18,508,717.69/x
  3. Step 3: Cross multiply
    8,639,538.47x = 18,508,717.69 × 18,508,717.69
  4. Step 4: Simplify right side
    8,639,538.47x = 342,572,630,435,575.38
  5. Step 5: Solve for x
    x = 342,572,630,435,575.38/8,639,538.47
  6. Step 6: Final answer
    x = 39,651,728.12

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.