Home / 29,139.50-40,190.64-20,201.96

Finding the Fourth Proportional to 29,139.50, 40,190.64 and 20,201.96

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Solution

The fourth proportional to 29,139.50, 40,190.64 and 20,201.96 is: 27,863.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.50 : 40,190.64 = 20,201.96 : x
  2. Step 2: Convert to fraction form
    29,139.50/40,190.64 = 20,201.96/x
  3. Step 3: Cross multiply
    29,139.50x = 40,190.64 × 20,201.96
  4. Step 4: Simplify right side
    29,139.50x = 811,929,701.65
  5. Step 5: Solve for x
    x = 811,929,701.65/29,139.50
  6. Step 6: Final answer
    x = 27,863.54

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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.