Home / 20,922.93-31,384.40-6,131.85

Finding the Fourth Proportional to 20,922.93, 31,384.40 and 6,131.85

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Solution

The fourth proportional to 20,922.93, 31,384.40 and 6,131.85 is: 9,197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.93 : 31,384.40 = 6,131.85 : x
  2. Step 2: Convert to fraction form
    20,922.93/31,384.40 = 6,131.85/x
  3. Step 3: Cross multiply
    20,922.93x = 31,384.40 × 6,131.85
  4. Step 4: Simplify right side
    20,922.93x = 192,444,402.48
  5. Step 5: Solve for x
    x = 192,444,402.48/20,922.93
  6. Step 6: Final answer
    x = 9,197.78

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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.