Home / 20,782.38-31,173.36-5,200.01

Finding the Fourth Proportional to 20,782.38, 31,173.36 and 5,200.01

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Solution

The fourth proportional to 20,782.38, 31,173.36 and 5,200.01 is: 7,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.38 : 31,173.36 = 5,200.01 : x
  2. Step 2: Convert to fraction form
    20,782.38/31,173.36 = 5,200.01/x
  3. Step 3: Cross multiply
    20,782.38x = 31,173.36 × 5,200.01
  4. Step 4: Simplify right side
    20,782.38x = 162,101,783.73
  5. Step 5: Solve for x
    x = 162,101,783.73/20,782.38
  6. Step 6: Final answer
    x = 7,799.96

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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.