Home / 21,280,621.28-31,895,078.66-11,542,141.41

Finding the Fourth Proportional to 21,280,621.28, 31,895,078.66 and 11,542,141.41

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Solution

The fourth proportional to 21,280,621.28, 31,895,078.66 and 11,542,141.41 is: 17,299,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280,621.28 : 31,895,078.66 = 11,542,141.41 : x
  2. Step 2: Convert to fraction form
    21,280,621.28/31,895,078.66 = 11,542,141.41/x
  3. Step 3: Cross multiply
    21,280,621.28x = 31,895,078.66 × 11,542,141.41
  4. Step 4: Simplify right side
    21,280,621.28x = 368,137,508,162,365.62
  5. Step 5: Solve for x
    x = 368,137,508,162,365.62/21,280,621.28
  6. Step 6: Final answer
    x = 17,299,189.87

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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.