Home / 20,165.52-30,249.81-5,374.38

Finding the Fourth Proportional to 20,165.52, 30,249.81 and 5,374.38

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Solution

The fourth proportional to 20,165.52, 30,249.81 and 5,374.38 is: 8,061.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.52 : 30,249.81 = 5,374.38 : x
  2. Step 2: Convert to fraction form
    20,165.52/30,249.81 = 5,374.38/x
  3. Step 3: Cross multiply
    20,165.52x = 30,249.81 × 5,374.38
  4. Step 4: Simplify right side
    20,165.52x = 162,573,973.87
  5. Step 5: Solve for x
    x = 162,573,973.87/20,165.52
  6. Step 6: Final answer
    x = 8,061.98

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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.