Home / 20,137.60-30,212.48-6,286.72

Finding the Fourth Proportional to 20,137.60, 30,212.48 and 6,286.72

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Solution

The fourth proportional to 20,137.60, 30,212.48 and 6,286.72 is: 9,431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.60 : 30,212.48 = 6,286.72 : x
  2. Step 2: Convert to fraction form
    20,137.60/30,212.48 = 6,286.72/x
  3. Step 3: Cross multiply
    20,137.60x = 30,212.48 × 6,286.72
  4. Step 4: Simplify right side
    20,137.60x = 189,937,402.27
  5. Step 5: Solve for x
    x = 189,937,402.27/20,137.60
  6. Step 6: Final answer
    x = 9,431.98

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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.