Home / 20,862.42-31,271.76-9,759.75

Finding the Fourth Proportional to 20,862.42, 31,271.76 and 9,759.75

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Solution

The fourth proportional to 20,862.42, 31,271.76 and 9,759.75 is: 14,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.42 : 31,271.76 = 9,759.75 : x
  2. Step 2: Convert to fraction form
    20,862.42/31,271.76 = 9,759.75/x
  3. Step 3: Cross multiply
    20,862.42x = 31,271.76 × 9,759.75
  4. Step 4: Simplify right side
    20,862.42x = 305,204,559.66
  5. Step 5: Solve for x
    x = 305,204,559.66/20,862.42
  6. Step 6: Final answer
    x = 14,629.39

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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.