Home / 20,853.07-31,279.82-8,204.11

Finding the Fourth Proportional to 20,853.07, 31,279.82 and 8,204.11

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Solution

The fourth proportional to 20,853.07, 31,279.82 and 8,204.11 is: 12,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.07 : 31,279.82 = 8,204.11 : x
  2. Step 2: Convert to fraction form
    20,853.07/31,279.82 = 8,204.11/x
  3. Step 3: Cross multiply
    20,853.07x = 31,279.82 × 8,204.11
  4. Step 4: Simplify right side
    20,853.07x = 256,622,964.84
  5. Step 5: Solve for x
    x = 256,622,964.84/20,853.07
  6. Step 6: Final answer
    x = 12,306.25

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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.