Home / 15,765.42-21,757.26-8,692.50

Finding the Fourth Proportional to 15,765.42, 21,757.26 and 8,692.50

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Solution

The fourth proportional to 15,765.42, 21,757.26 and 8,692.50 is: 11,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.42 : 21,757.26 = 8,692.50 : x
  2. Step 2: Convert to fraction form
    15,765.42/21,757.26 = 8,692.50/x
  3. Step 3: Cross multiply
    15,765.42x = 21,757.26 × 8,692.50
  4. Step 4: Simplify right side
    15,765.42x = 189,124,982.55
  5. Step 5: Solve for x
    x = 189,124,982.55/15,765.42
  6. Step 6: Final answer
    x = 11,996.19

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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.