Home / 28,136.43-42,190.56-8,409.69

Finding the Fourth Proportional to 28,136.43, 42,190.56 and 8,409.69

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Solution

The fourth proportional to 28,136.43, 42,190.56 and 8,409.69 is: 12,610.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.43 : 42,190.56 = 8,409.69 : x
  2. Step 2: Convert to fraction form
    28,136.43/42,190.56 = 8,409.69/x
  3. Step 3: Cross multiply
    28,136.43x = 42,190.56 × 8,409.69
  4. Step 4: Simplify right side
    28,136.43x = 354,809,530.53
  5. Step 5: Solve for x
    x = 354,809,530.53/28,136.43
  6. Step 6: Final answer
    x = 12,610.33

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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.