Home / 20,123.32-27,768.87-11,170.84

Finding the Fourth Proportional to 20,123.32, 27,768.87 and 11,170.84

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Solution

The fourth proportional to 20,123.32, 27,768.87 and 11,170.84 is: 15,415.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.32 : 27,768.87 = 11,170.84 : x
  2. Step 2: Convert to fraction form
    20,123.32/27,768.87 = 11,170.84/x
  3. Step 3: Cross multiply
    20,123.32x = 27,768.87 × 11,170.84
  4. Step 4: Simplify right side
    20,123.32x = 310,201,603.75
  5. Step 5: Solve for x
    x = 310,201,603.75/20,123.32
  6. Step 6: Final answer
    x = 15,415.03

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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.