Home / 20,785.46-31,178.21-5,203.08

Finding the Fourth Proportional to 20,785.46, 31,178.21 and 5,203.08

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Solution

The fourth proportional to 20,785.46, 31,178.21 and 5,203.08 is: 7,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.46 : 31,178.21 = 5,203.08 : x
  2. Step 2: Convert to fraction form
    20,785.46/31,178.21 = 5,203.08/x
  3. Step 3: Cross multiply
    20,785.46x = 31,178.21 × 5,203.08
  4. Step 4: Simplify right side
    20,785.46x = 162,222,694.87
  5. Step 5: Solve for x
    x = 162,222,694.87/20,785.46
  6. Step 6: Final answer
    x = 7,804.63

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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.