Home / 20,914.90-31,370.06-6,123.96

Finding the Fourth Proportional to 20,914.90, 31,370.06 and 6,123.96

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Solution

The fourth proportional to 20,914.90, 31,370.06 and 6,123.96 is: 9,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.90 : 31,370.06 = 6,123.96 : x
  2. Step 2: Convert to fraction form
    20,914.90/31,370.06 = 6,123.96/x
  3. Step 3: Cross multiply
    20,914.90x = 31,370.06 × 6,123.96
  4. Step 4: Simplify right side
    20,914.90x = 192,109,079.66
  5. Step 5: Solve for x
    x = 192,109,079.66/20,914.90
  6. Step 6: Final answer
    x = 9,185.27

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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.