Home / 20,868.35-31,307.66-6,077.39

Finding the Fourth Proportional to 20,868.35, 31,307.66 and 6,077.39

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Solution

The fourth proportional to 20,868.35, 31,307.66 and 6,077.39 is: 9,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.35 : 31,307.66 = 6,077.39 : x
  2. Step 2: Convert to fraction form
    20,868.35/31,307.66 = 6,077.39/x
  3. Step 3: Cross multiply
    20,868.35x = 31,307.66 × 6,077.39
  4. Step 4: Simplify right side
    20,868.35x = 190,268,949.99
  5. Step 5: Solve for x
    x = 190,268,949.99/20,868.35
  6. Step 6: Final answer
    x = 9,117.59

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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.