Home / 20,705,691.69-28,574,054.30-11,413,620.77

Finding the Fourth Proportional to 20,705,691.69, 28,574,054.30 and 11,413,620.77

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Solution

The fourth proportional to 20,705,691.69, 28,574,054.30 and 11,413,620.77 is: 15,750,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,691.69 : 28,574,054.30 = 11,413,620.77 : x
  2. Step 2: Convert to fraction form
    20,705,691.69/28,574,054.30 = 11,413,620.77/x
  3. Step 3: Cross multiply
    20,705,691.69x = 28,574,054.30 × 11,413,620.77
  4. Step 4: Simplify right side
    20,705,691.69x = 326,133,419,527,251.56
  5. Step 5: Solve for x
    x = 326,133,419,527,251.56/20,705,691.69
  6. Step 6: Final answer
    x = 15,750,906.78

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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.