Home / 20,071.60-30,107.52-8,231.86

Finding the Fourth Proportional to 20,071.60, 30,107.52 and 8,231.86

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Solution

The fourth proportional to 20,071.60, 30,107.52 and 8,231.86 is: 12,347.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.60 : 30,107.52 = 8,231.86 : x
  2. Step 2: Convert to fraction form
    20,071.60/30,107.52 = 8,231.86/x
  3. Step 3: Cross multiply
    20,071.60x = 30,107.52 × 8,231.86
  4. Step 4: Simplify right side
    20,071.60x = 247,840,889.59
  5. Step 5: Solve for x
    x = 247,840,889.59/20,071.60
  6. Step 6: Final answer
    x = 12,347.84

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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.