Home / 20,771.24-31,155.82-7,622.57

Finding the Fourth Proportional to 20,771.24, 31,155.82 and 7,622.57

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Solution

The fourth proportional to 20,771.24, 31,155.82 and 7,622.57 is: 11,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.24 : 31,155.82 = 7,622.57 : x
  2. Step 2: Convert to fraction form
    20,771.24/31,155.82 = 7,622.57/x
  3. Step 3: Cross multiply
    20,771.24x = 31,155.82 × 7,622.57
  4. Step 4: Simplify right side
    20,771.24x = 237,487,477.69
  5. Step 5: Solve for x
    x = 237,487,477.69/20,771.24
  6. Step 6: Final answer
    x = 11,433.48

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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.