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Finding the Fourth Proportional to 15,658,723.08, 21,608,992.92 and 8,690,452.32

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Solution

The fourth proportional to 15,658,723.08, 21,608,992.92 and 8,690,452.32 is: 11,992,799.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658,723.08 : 21,608,992.92 = 8,690,452.32 : x
  2. Step 2: Convert to fraction form
    15,658,723.08/21,608,992.92 = 8,690,452.32/x
  3. Step 3: Cross multiply
    15,658,723.08x = 21,608,992.92 × 8,690,452.32
  4. Step 4: Simplify right side
    15,658,723.08x = 187,791,922,654,477.59
  5. Step 5: Solve for x
    x = 187,791,922,654,477.59/15,658,723.08
  6. Step 6: Final answer
    x = 11,992,799.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.