Home / 20,204.64-30,311.85-6,877.50

Finding the Fourth Proportional to 20,204.64, 30,311.85 and 6,877.50

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Solution

The fourth proportional to 20,204.64, 30,311.85 and 6,877.50 is: 10,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.64 : 30,311.85 = 6,877.50 : x
  2. Step 2: Convert to fraction form
    20,204.64/30,311.85 = 6,877.50/x
  3. Step 3: Cross multiply
    20,204.64x = 30,311.85 × 6,877.50
  4. Step 4: Simplify right side
    20,204.64x = 208,469,748.38
  5. Step 5: Solve for x
    x = 208,469,748.38/20,204.64
  6. Step 6: Final answer
    x = 10,317.91

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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.