Home / 20,902.78-31,334.01-7,044.22

Finding the Fourth Proportional to 20,902.78, 31,334.01 and 7,044.22

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Solution

The fourth proportional to 20,902.78, 31,334.01 and 7,044.22 is: 10,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.78 : 31,334.01 = 7,044.22 : x
  2. Step 2: Convert to fraction form
    20,902.78/31,334.01 = 7,044.22/x
  3. Step 3: Cross multiply
    20,902.78x = 31,334.01 × 7,044.22
  4. Step 4: Simplify right side
    20,902.78x = 220,723,659.92
  5. Step 5: Solve for x
    x = 220,723,659.92/20,902.78
  6. Step 6: Final answer
    x = 10,559.54

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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.