Home / 20,777.08-31,147.14-7,626.38

Finding the Fourth Proportional to 20,777.08, 31,147.14 and 7,626.38

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Solution

The fourth proportional to 20,777.08, 31,147.14 and 7,626.38 is: 11,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.08 : 31,147.14 = 7,626.38 : x
  2. Step 2: Convert to fraction form
    20,777.08/31,147.14 = 7,626.38/x
  3. Step 3: Cross multiply
    20,777.08x = 31,147.14 × 7,626.38
  4. Step 4: Simplify right side
    20,777.08x = 237,539,864.57
  5. Step 5: Solve for x
    x = 237,539,864.57/20,777.08
  6. Step 6: Final answer
    x = 11,432.78

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1.5x scale

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.