Home / 20,122.15-27,768.87-11,170.23

Finding the Fourth Proportional to 20,122.15, 27,768.87 and 11,170.23

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Solution

The fourth proportional to 20,122.15, 27,768.87 and 11,170.23 is: 15,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.15 : 27,768.87 = 11,170.23 : x
  2. Step 2: Convert to fraction form
    20,122.15/27,768.87 = 11,170.23/x
  3. Step 3: Cross multiply
    20,122.15x = 27,768.87 × 11,170.23
  4. Step 4: Simplify right side
    20,122.15x = 310,184,664.74
  5. Step 5: Solve for x
    x = 310,184,664.74/20,122.15
  6. Step 6: Final answer
    x = 15,415.09

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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.