Home / 13,811.70-20,721.38-6,793.68

Finding the Fourth Proportional to 13,811.70, 20,721.38 and 6,793.68

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Solution

The fourth proportional to 13,811.70, 20,721.38 and 6,793.68 is: 10,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.70 : 20,721.38 = 6,793.68 : x
  2. Step 2: Convert to fraction form
    13,811.70/20,721.38 = 6,793.68/x
  3. Step 3: Cross multiply
    13,811.70x = 20,721.38 × 6,793.68
  4. Step 4: Simplify right side
    13,811.70x = 140,774,424.88
  5. Step 5: Solve for x
    x = 140,774,424.88/13,811.70
  6. Step 6: Final answer
    x = 10,192.40

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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.