Home / 13,136.14-18,121.12-8,887.39

Finding the Fourth Proportional to 13,136.14, 18,121.12 and 8,887.39

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Solution

The fourth proportional to 13,136.14, 18,121.12 and 8,887.39 is: 12,260.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.14 : 18,121.12 = 8,887.39 : x
  2. Step 2: Convert to fraction form
    13,136.14/18,121.12 = 8,887.39/x
  3. Step 3: Cross multiply
    13,136.14x = 18,121.12 × 8,887.39
  4. Step 4: Simplify right side
    13,136.14x = 161,049,460.68
  5. Step 5: Solve for x
    x = 161,049,460.68/13,136.14
  6. Step 6: Final answer
    x = 12,260.03

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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.