Home / 20,855.43-31,263.71-7,704.27

Finding the Fourth Proportional to 20,855.43, 31,263.71 and 7,704.27

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Solution

The fourth proportional to 20,855.43, 31,263.71 and 7,704.27 is: 11,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.43 : 31,263.71 = 7,704.27 : x
  2. Step 2: Convert to fraction form
    20,855.43/31,263.71 = 7,704.27/x
  3. Step 3: Cross multiply
    20,855.43x = 31,263.71 × 7,704.27
  4. Step 4: Simplify right side
    20,855.43x = 240,864,024.52
  5. Step 5: Solve for x
    x = 240,864,024.52/20,855.43
  6. Step 6: Final answer
    x = 11,549.22

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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.