Home / 20,791.68-31,194.18-7,455.69

Finding the Fourth Proportional to 20,791.68, 31,194.18 and 7,455.69

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Solution

The fourth proportional to 20,791.68, 31,194.18 and 7,455.69 is: 11,185.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.68 : 31,194.18 = 7,455.69 : x
  2. Step 2: Convert to fraction form
    20,791.68/31,194.18 = 7,455.69/x
  3. Step 3: Cross multiply
    20,791.68x = 31,194.18 × 7,455.69
  4. Step 4: Simplify right side
    20,791.68x = 232,574,135.88
  5. Step 5: Solve for x
    x = 232,574,135.88/20,791.68
  6. Step 6: Final answer
    x = 11,185.92

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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.