Home / 20,811.24-31,210.38-6,957

Finding the Fourth Proportional to 20,811.24, 31,210.38 and 6,957

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Solution

The fourth proportional to 20,811.24, 31,210.38 and 6,957 is: 10,433.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.24 : 31,210.38 = 6,957 : x
  2. Step 2: Convert to fraction form
    20,811.24/31,210.38 = 6,957/x
  3. Step 3: Cross multiply
    20,811.24x = 31,210.38 × 6,957
  4. Step 4: Simplify right side
    20,811.24x = 217,130,613.66
  5. Step 5: Solve for x
    x = 217,130,613.66/20,811.24
  6. Step 6: Final answer
    x = 10,433.33

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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.