Home / 10,660.14-15,991.66-3,638.26

Finding the Fourth Proportional to 10,660.14, 15,991.66 and 3,638.26

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Solution

The fourth proportional to 10,660.14, 15,991.66 and 3,638.26 is: 5,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.14 : 15,991.66 = 3,638.26 : x
  2. Step 2: Convert to fraction form
    10,660.14/15,991.66 = 3,638.26/x
  3. Step 3: Cross multiply
    10,660.14x = 15,991.66 × 3,638.26
  4. Step 4: Simplify right side
    10,660.14x = 58,181,816.91
  5. Step 5: Solve for x
    x = 58,181,816.91/10,660.14
  6. Step 6: Final answer
    x = 5,457.89

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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.