Home / 20,800.59-31,203.82-6,756.12

Finding the Fourth Proportional to 20,800.59, 31,203.82 and 6,756.12

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Solution

The fourth proportional to 20,800.59, 31,203.82 and 6,756.12 is: 10,135.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.59 : 31,203.82 = 6,756.12 : x
  2. Step 2: Convert to fraction form
    20,800.59/31,203.82 = 6,756.12/x
  3. Step 3: Cross multiply
    20,800.59x = 31,203.82 × 6,756.12
  4. Step 4: Simplify right side
    20,800.59x = 210,816,795.20
  5. Step 5: Solve for x
    x = 210,816,795.20/20,800.59
  6. Step 6: Final answer
    x = 10,135.13

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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.