Home / 20,759.40-31,149.90-9,073.80

Finding the Fourth Proportional to 20,759.40, 31,149.90 and 9,073.80

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Solution

The fourth proportional to 20,759.40, 31,149.90 and 9,073.80 is: 13,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.40 : 31,149.90 = 9,073.80 : x
  2. Step 2: Convert to fraction form
    20,759.40/31,149.90 = 9,073.80/x
  3. Step 3: Cross multiply
    20,759.40x = 31,149.90 × 9,073.80
  4. Step 4: Simplify right side
    20,759.40x = 282,647,962.62
  5. Step 5: Solve for x
    x = 282,647,962.62/20,759.40
  6. Step 6: Final answer
    x = 13,615.42

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1.5x scale

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.