Home / 20,972,216.91-28,942,557.26-11,679,786.92

Finding the Fourth Proportional to 20,972,216.91, 28,942,557.26 and 11,679,786.92

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Solution

The fourth proportional to 20,972,216.91, 28,942,557.26 and 11,679,786.92 is: 16,118,606.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,216.91 : 28,942,557.26 = 11,679,786.92 : x
  2. Step 2: Convert to fraction form
    20,972,216.91/28,942,557.26 = 11,679,786.92/x
  3. Step 3: Cross multiply
    20,972,216.91x = 28,942,557.26 × 11,679,786.92
  4. Step 4: Simplify right side
    20,972,216.91x = 338,042,901,513,587.25
  5. Step 5: Solve for x
    x = 338,042,901,513,587.25/20,972,216.91
  6. Step 6: Final answer
    x = 16,118,606.01

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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.