Home / 15,765.96-21,757.83-8,692.36

Finding the Fourth Proportional to 15,765.96, 21,757.83 and 8,692.36

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Solution

The fourth proportional to 15,765.96, 21,757.83 and 8,692.36 is: 11,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.96 : 21,757.83 = 8,692.36 : x
  2. Step 2: Convert to fraction form
    15,765.96/21,757.83 = 8,692.36/x
  3. Step 3: Cross multiply
    15,765.96x = 21,757.83 × 8,692.36
  4. Step 4: Simplify right side
    15,765.96x = 189,126,891.18
  5. Step 5: Solve for x
    x = 189,126,891.18/15,765.96
  6. Step 6: Final answer
    x = 11,995.90

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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.