Home / 9,135.84-13,729.68-8,902.56

Finding the Fourth Proportional to 9,135.84, 13,729.68 and 8,902.56

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Solution

The fourth proportional to 9,135.84, 13,729.68 and 8,902.56 is: 13,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.84 : 13,729.68 = 8,902.56 : x
  2. Step 2: Convert to fraction form
    9,135.84/13,729.68 = 8,902.56/x
  3. Step 3: Cross multiply
    9,135.84x = 13,729.68 × 8,902.56
  4. Step 4: Simplify right side
    9,135.84x = 122,229,299.98
  5. Step 5: Solve for x
    x = 122,229,299.98/9,135.84
  6. Step 6: Final answer
    x = 13,379.10

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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.