Home / 12,781,654-19,172,874.66-5,589,485.80

Finding the Fourth Proportional to 12,781,654, 19,172,874.66 and 5,589,485.80

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Solution

The fourth proportional to 12,781,654, 19,172,874.66 and 5,589,485.80 is: 8,384,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,654 : 19,172,874.66 = 5,589,485.80 : x
  2. Step 2: Convert to fraction form
    12,781,654/19,172,874.66 = 5,589,485.80/x
  3. Step 3: Cross multiply
    12,781,654x = 19,172,874.66 × 5,589,485.80
  4. Step 4: Simplify right side
    12,781,654x = 107,166,510,657,249.83
  5. Step 5: Solve for x
    x = 107,166,510,657,249.83/12,781,654
  6. Step 6: Final answer
    x = 8,384,400.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.