Home / 20,551.59-30,777.71-11,759.85

Finding the Fourth Proportional to 20,551.59, 30,777.71 and 11,759.85

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Solution

The fourth proportional to 20,551.59, 30,777.71 and 11,759.85 is: 17,611.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.59 : 30,777.71 = 11,759.85 : x
  2. Step 2: Convert to fraction form
    20,551.59/30,777.71 = 11,759.85/x
  3. Step 3: Cross multiply
    20,551.59x = 30,777.71 × 11,759.85
  4. Step 4: Simplify right side
    20,551.59x = 361,941,194.14
  5. Step 5: Solve for x
    x = 361,941,194.14/20,551.59
  6. Step 6: Final answer
    x = 17,611.35

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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.