Home / 20,935.26-31,402.45-6,143.85

Finding the Fourth Proportional to 20,935.26, 31,402.45 and 6,143.85

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Solution

The fourth proportional to 20,935.26, 31,402.45 and 6,143.85 is: 9,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.26 : 31,402.45 = 6,143.85 : x
  2. Step 2: Convert to fraction form
    20,935.26/31,402.45 = 6,143.85/x
  3. Step 3: Cross multiply
    20,935.26x = 31,402.45 × 6,143.85
  4. Step 4: Simplify right side
    20,935.26x = 192,931,942.43
  5. Step 5: Solve for x
    x = 192,931,942.43/20,935.26
  6. Step 6: Final answer
    x = 9,215.65

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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.