Home / 20,808.24-31,205.88-6,954

Finding the Fourth Proportional to 20,808.24, 31,205.88 and 6,954

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Solution

The fourth proportional to 20,808.24, 31,205.88 and 6,954 is: 10,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.24 : 31,205.88 = 6,954 : x
  2. Step 2: Convert to fraction form
    20,808.24/31,205.88 = 6,954/x
  3. Step 3: Cross multiply
    20,808.24x = 31,205.88 × 6,954
  4. Step 4: Simplify right side
    20,808.24x = 217,005,689.52
  5. Step 5: Solve for x
    x = 217,005,689.52/20,808.24
  6. Step 6: Final answer
    x = 10,428.83

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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.