Home / 20,647.42-30,971.12-5,065.04

Finding the Fourth Proportional to 20,647.42, 30,971.12 and 5,065.04

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Solution

The fourth proportional to 20,647.42, 30,971.12 and 5,065.04 is: 7,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.42 : 30,971.12 = 5,065.04 : x
  2. Step 2: Convert to fraction form
    20,647.42/30,971.12 = 5,065.04/x
  3. Step 3: Cross multiply
    20,647.42x = 30,971.12 × 5,065.04
  4. Step 4: Simplify right side
    20,647.42x = 156,870,013.75
  5. Step 5: Solve for x
    x = 156,870,013.75/20,647.42
  6. Step 6: Final answer
    x = 7,597.56

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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.