Home / 13,515.98-20,312.33-9,163.85

Finding the Fourth Proportional to 13,515.98, 20,312.33 and 9,163.85

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Solution

The fourth proportional to 13,515.98, 20,312.33 and 9,163.85 is: 13,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.98 : 20,312.33 = 9,163.85 : x
  2. Step 2: Convert to fraction form
    13,515.98/20,312.33 = 9,163.85/x
  3. Step 3: Cross multiply
    13,515.98x = 20,312.33 × 9,163.85
  4. Step 4: Simplify right side
    13,515.98x = 186,138,997.89
  5. Step 5: Solve for x
    x = 186,138,997.89/13,515.98
  6. Step 6: Final answer
    x = 13,771.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.