Home / 15,155.36-20,910.92-8,692.01

Finding the Fourth Proportional to 15,155.36, 20,910.92 and 8,692.01

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Solution

The fourth proportional to 15,155.36, 20,910.92 and 8,692.01 is: 11,992.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.36 : 20,910.92 = 8,692.01 : x
  2. Step 2: Convert to fraction form
    15,155.36/20,910.92 = 8,692.01/x
  3. Step 3: Cross multiply
    15,155.36x = 20,910.92 × 8,692.01
  4. Step 4: Simplify right side
    15,155.36x = 181,757,777.73
  5. Step 5: Solve for x
    x = 181,757,777.73/15,155.36
  6. Step 6: Final answer
    x = 11,992.97

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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.