Home / 20,136.72-30,205.02-6,989.04

Finding the Fourth Proportional to 20,136.72, 30,205.02 and 6,989.04

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Solution

The fourth proportional to 20,136.72, 30,205.02 and 6,989.04 is: 10,483.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.72 : 30,205.02 = 6,989.04 : x
  2. Step 2: Convert to fraction form
    20,136.72/30,205.02 = 6,989.04/x
  3. Step 3: Cross multiply
    20,136.72x = 30,205.02 × 6,989.04
  4. Step 4: Simplify right side
    20,136.72x = 211,104,092.98
  5. Step 5: Solve for x
    x = 211,104,092.98/20,136.72
  6. Step 6: Final answer
    x = 10,483.54

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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.