Home / 20,868.75-31,308.26-6,077.79

Finding the Fourth Proportional to 20,868.75, 31,308.26 and 6,077.79

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Solution

The fourth proportional to 20,868.75, 31,308.26 and 6,077.79 is: 9,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.75 : 31,308.26 = 6,077.79 : x
  2. Step 2: Convert to fraction form
    20,868.75/31,308.26 = 6,077.79/x
  3. Step 3: Cross multiply
    20,868.75x = 31,308.26 × 6,077.79
  4. Step 4: Simplify right side
    20,868.75x = 190,284,999.16
  5. Step 5: Solve for x
    x = 190,284,999.16/20,868.75
  6. Step 6: Final answer
    x = 9,118.18

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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.