Home / 20,416.80-30,625.20-17,136.30

Finding the Fourth Proportional to 20,416.80, 30,625.20 and 17,136.30

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Solution

The fourth proportional to 20,416.80, 30,625.20 and 17,136.30 is: 25,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.80 : 30,625.20 = 17,136.30 : x
  2. Step 2: Convert to fraction form
    20,416.80/30,625.20 = 17,136.30/x
  3. Step 3: Cross multiply
    20,416.80x = 30,625.20 × 17,136.30
  4. Step 4: Simplify right side
    20,416.80x = 524,802,614.76
  5. Step 5: Solve for x
    x = 524,802,614.76/20,416.80
  6. Step 6: Final answer
    x = 25,704.45

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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.