Home / 20,972,217.91-28,942,558.64-11,679,787.92

Finding the Fourth Proportional to 20,972,217.91, 28,942,558.64 and 11,679,787.92

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Solution

The fourth proportional to 20,972,217.91, 28,942,558.64 and 11,679,787.92 is: 16,118,607.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,217.91 : 28,942,558.64 = 11,679,787.92 : x
  2. Step 2: Convert to fraction form
    20,972,217.91/28,942,558.64 = 11,679,787.92/x
  3. Step 3: Cross multiply
    20,972,217.91x = 28,942,558.64 × 11,679,787.92
  4. Step 4: Simplify right side
    20,972,217.91x = 338,042,946,777,363.62
  5. Step 5: Solve for x
    x = 338,042,946,777,363.62/20,972,217.91
  6. Step 6: Final answer
    x = 16,118,607.40

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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.