Home / 20,016.87-30,029.59-5,978

Finding the Fourth Proportional to 20,016.87, 30,029.59 and 5,978

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Solution

The fourth proportional to 20,016.87, 30,029.59 and 5,978 is: 8,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016.87 : 30,029.59 = 5,978 : x
  2. Step 2: Convert to fraction form
    20,016.87/30,029.59 = 5,978/x
  3. Step 3: Cross multiply
    20,016.87x = 30,029.59 × 5,978
  4. Step 4: Simplify right side
    20,016.87x = 179,516,889.02
  5. Step 5: Solve for x
    x = 179,516,889.02/20,016.87
  6. Step 6: Final answer
    x = 8,968.28

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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.