Home / 30,217.94-41,687.36-20,136.56

Finding the Fourth Proportional to 30,217.94, 41,687.36 and 20,136.56

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Solution

The fourth proportional to 30,217.94, 41,687.36 and 20,136.56 is: 27,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,217.94 : 41,687.36 = 20,136.56 : x
  2. Step 2: Convert to fraction form
    30,217.94/41,687.36 = 20,136.56/x
  3. Step 3: Cross multiply
    30,217.94x = 41,687.36 × 20,136.56
  4. Step 4: Simplify right side
    30,217.94x = 839,440,025.88
  5. Step 5: Solve for x
    x = 839,440,025.88/30,217.94
  6. Step 6: Final answer
    x = 27,779.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.