Home / 20,991.40-31,484.34-6,201.88

Finding the Fourth Proportional to 20,991.40, 31,484.34 and 6,201.88

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Solution

The fourth proportional to 20,991.40, 31,484.34 and 6,201.88 is: 9,302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991.40 : 31,484.34 = 6,201.88 : x
  2. Step 2: Convert to fraction form
    20,991.40/31,484.34 = 6,201.88/x
  3. Step 3: Cross multiply
    20,991.40x = 31,484.34 × 6,201.88
  4. Step 4: Simplify right side
    20,991.40x = 195,262,098.56
  5. Step 5: Solve for x
    x = 195,262,098.56/20,991.40
  6. Step 6: Final answer
    x = 9,302.00

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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.