Home / 25,971.30-38,986.11-10,399.86

Finding the Fourth Proportional to 25,971.30, 38,986.11 and 10,399.86

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Solution

The fourth proportional to 25,971.30, 38,986.11 and 10,399.86 is: 15,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,971.30 : 38,986.11 = 10,399.86 : x
  2. Step 2: Convert to fraction form
    25,971.30/38,986.11 = 10,399.86/x
  3. Step 3: Cross multiply
    25,971.30x = 38,986.11 × 10,399.86
  4. Step 4: Simplify right side
    25,971.30x = 405,450,085.94
  5. Step 5: Solve for x
    x = 405,450,085.94/25,971.30
  6. Step 6: Final answer
    x = 15,611.47

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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.