Home / 26,479.85-36,535.20-15,721.88

Finding the Fourth Proportional to 26,479.85, 36,535.20 and 15,721.88

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Solution

The fourth proportional to 26,479.85, 36,535.20 and 15,721.88 is: 21,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,479.85 : 36,535.20 = 15,721.88 : x
  2. Step 2: Convert to fraction form
    26,479.85/36,535.20 = 15,721.88/x
  3. Step 3: Cross multiply
    26,479.85x = 36,535.20 × 15,721.88
  4. Step 4: Simplify right side
    26,479.85x = 574,401,847.50
  5. Step 5: Solve for x
    x = 574,401,847.50/26,479.85
  6. Step 6: Final answer
    x = 21,692.04

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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.