Home / 20,840.32-31,262.91-8,364.70

Finding the Fourth Proportional to 20,840.32, 31,262.91 and 8,364.70

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Solution

The fourth proportional to 20,840.32, 31,262.91 and 8,364.70 is: 12,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.32 : 31,262.91 = 8,364.70 : x
  2. Step 2: Convert to fraction form
    20,840.32/31,262.91 = 8,364.70/x
  3. Step 3: Cross multiply
    20,840.32x = 31,262.91 × 8,364.70
  4. Step 4: Simplify right side
    20,840.32x = 261,504,863.28
  5. Step 5: Solve for x
    x = 261,504,863.28/20,840.32
  6. Step 6: Final answer
    x = 12,548.03

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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.