Home / 11,172.20-15,418.02-6,136.88

Finding the Fourth Proportional to 11,172.20, 15,418.02 and 6,136.88

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Solution

The fourth proportional to 11,172.20, 15,418.02 and 6,136.88 is: 8,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.20 : 15,418.02 = 6,136.88 : x
  2. Step 2: Convert to fraction form
    11,172.20/15,418.02 = 6,136.88/x
  3. Step 3: Cross multiply
    11,172.20x = 15,418.02 × 6,136.88
  4. Step 4: Simplify right side
    11,172.20x = 94,618,461.49
  5. Step 5: Solve for x
    x = 94,618,461.49/11,172.20
  6. Step 6: Final answer
    x = 8,469.10

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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.