Home / 20,712.11-31,068.24-8,231.33

Finding the Fourth Proportional to 20,712.11, 31,068.24 and 8,231.33

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Solution

The fourth proportional to 20,712.11, 31,068.24 and 8,231.33 is: 12,347.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.11 : 31,068.24 = 8,231.33 : x
  2. Step 2: Convert to fraction form
    20,712.11/31,068.24 = 8,231.33/x
  3. Step 3: Cross multiply
    20,712.11x = 31,068.24 × 8,231.33
  4. Step 4: Simplify right side
    20,712.11x = 255,732,935.96
  5. Step 5: Solve for x
    x = 255,732,935.96/20,712.11
  6. Step 6: Final answer
    x = 12,347.02

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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.