Home / 20,803.05-31,201.50-6,764.35

Finding the Fourth Proportional to 20,803.05, 31,201.50 and 6,764.35

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Solution

The fourth proportional to 20,803.05, 31,201.50 and 6,764.35 is: 10,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.05 : 31,201.50 = 6,764.35 : x
  2. Step 2: Convert to fraction form
    20,803.05/31,201.50 = 6,764.35/x
  3. Step 3: Cross multiply
    20,803.05x = 31,201.50 × 6,764.35
  4. Step 4: Simplify right side
    20,803.05x = 211,057,866.53
  5. Step 5: Solve for x
    x = 211,057,866.53/20,803.05
  6. Step 6: Final answer
    x = 10,145.53

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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.