Home / 20,830.51-31,249.01-6,787.27

Finding the Fourth Proportional to 20,830.51, 31,249.01 and 6,787.27

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Solution

The fourth proportional to 20,830.51, 31,249.01 and 6,787.27 is: 10,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.51 : 31,249.01 = 6,787.27 : x
  2. Step 2: Convert to fraction form
    20,830.51/31,249.01 = 6,787.27/x
  3. Step 3: Cross multiply
    20,830.51x = 31,249.01 × 6,787.27
  4. Step 4: Simplify right side
    20,830.51x = 212,095,468.10
  5. Step 5: Solve for x
    x = 212,095,468.10/20,830.51
  6. Step 6: Final answer
    x = 10,181.96

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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.