Home / 13,991.01-20,990.16-5,226

Finding the Fourth Proportional to 13,991.01, 20,990.16 and 5,226

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Solution

The fourth proportional to 13,991.01, 20,990.16 and 5,226 is: 7,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.01 : 20,990.16 = 5,226 : x
  2. Step 2: Convert to fraction form
    13,991.01/20,990.16 = 5,226/x
  3. Step 3: Cross multiply
    13,991.01x = 20,990.16 × 5,226
  4. Step 4: Simplify right side
    13,991.01x = 109,694,576.16
  5. Step 5: Solve for x
    x = 109,694,576.16/13,991.01
  6. Step 6: Final answer
    x = 7,840.36

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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.