Home / 20,099.12-27,736.77-11,147.99

Finding the Fourth Proportional to 20,099.12, 27,736.77 and 11,147.99

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Solution

The fourth proportional to 20,099.12, 27,736.77 and 11,147.99 is: 15,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.12 : 27,736.77 = 11,147.99 : x
  2. Step 2: Convert to fraction form
    20,099.12/27,736.77 = 11,147.99/x
  3. Step 3: Cross multiply
    20,099.12x = 27,736.77 × 11,147.99
  4. Step 4: Simplify right side
    20,099.12x = 309,209,095.91
  5. Step 5: Solve for x
    x = 309,209,095.91/20,099.12
  6. Step 6: Final answer
    x = 15,384.21

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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.