Home / 10,082.81-15,121.76-3,157.31

Finding the Fourth Proportional to 10,082.81, 15,121.76 and 3,157.31

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Solution

The fourth proportional to 10,082.81, 15,121.76 and 3,157.31 is: 4,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,082.81 : 15,121.76 = 3,157.31 : x
  2. Step 2: Convert to fraction form
    10,082.81/15,121.76 = 3,157.31/x
  3. Step 3: Cross multiply
    10,082.81x = 15,121.76 × 3,157.31
  4. Step 4: Simplify right side
    10,082.81x = 47,743,992.67
  5. Step 5: Solve for x
    x = 47,743,992.67/10,082.81
  6. Step 6: Final answer
    x = 4,735.19

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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.