Home / 20,787.35-31,200.60-10,933.70

Finding the Fourth Proportional to 20,787.35, 31,200.60 and 10,933.70

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Solution

The fourth proportional to 20,787.35, 31,200.60 and 10,933.70 is: 16,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.35 : 31,200.60 = 10,933.70 : x
  2. Step 2: Convert to fraction form
    20,787.35/31,200.60 = 10,933.70/x
  3. Step 3: Cross multiply
    20,787.35x = 31,200.60 × 10,933.70
  4. Step 4: Simplify right side
    20,787.35x = 341,138,000.22
  5. Step 5: Solve for x
    x = 341,138,000.22/20,787.35
  6. Step 6: Final answer
    x = 16,410.85

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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.