Home / 20,640.52-30,957.90-6,787.72

Finding the Fourth Proportional to 20,640.52, 30,957.90 and 6,787.72

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Solution

The fourth proportional to 20,640.52, 30,957.90 and 6,787.72 is: 10,180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.52 : 30,957.90 = 6,787.72 : x
  2. Step 2: Convert to fraction form
    20,640.52/30,957.90 = 6,787.72/x
  3. Step 3: Cross multiply
    20,640.52x = 30,957.90 × 6,787.72
  4. Step 4: Simplify right side
    20,640.52x = 210,133,556.99
  5. Step 5: Solve for x
    x = 210,133,556.99/20,640.52
  6. Step 6: Final answer
    x = 10,180.63

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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.