Home / 20,079.39-27,709.77-11,127.09

Finding the Fourth Proportional to 20,079.39, 27,709.77 and 11,127.09

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Solution

The fourth proportional to 20,079.39, 27,709.77 and 11,127.09 is: 15,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.39 : 27,709.77 = 11,127.09 : x
  2. Step 2: Convert to fraction form
    20,079.39/27,709.77 = 11,127.09/x
  3. Step 3: Cross multiply
    20,079.39x = 27,709.77 × 11,127.09
  4. Step 4: Simplify right side
    20,079.39x = 308,329,104.67
  5. Step 5: Solve for x
    x = 308,329,104.67/20,079.39
  6. Step 6: Final answer
    x = 15,355.50

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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.