Home / 20,580.64-30,853.68-8,261.92

Finding the Fourth Proportional to 20,580.64, 30,853.68 and 8,261.92

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Solution

The fourth proportional to 20,580.64, 30,853.68 and 8,261.92 is: 12,385.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.64 : 30,853.68 = 8,261.92 : x
  2. Step 2: Convert to fraction form
    20,580.64/30,853.68 = 8,261.92/x
  3. Step 3: Cross multiply
    20,580.64x = 30,853.68 × 8,261.92
  4. Step 4: Simplify right side
    20,580.64x = 254,910,635.87
  5. Step 5: Solve for x
    x = 254,910,635.87/20,580.64
  6. Step 6: Final answer
    x = 12,385.94

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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.