Home / 15,446.12-21,315.78-8,372.66

Finding the Fourth Proportional to 15,446.12, 21,315.78 and 8,372.66

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Solution

The fourth proportional to 15,446.12, 21,315.78 and 8,372.66 is: 11,554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.12 : 21,315.78 = 8,372.66 : x
  2. Step 2: Convert to fraction form
    15,446.12/21,315.78 = 8,372.66/x
  3. Step 3: Cross multiply
    15,446.12x = 21,315.78 × 8,372.66
  4. Step 4: Simplify right side
    15,446.12x = 178,469,778.57
  5. Step 5: Solve for x
    x = 178,469,778.57/15,446.12
  6. Step 6: Final answer
    x = 11,554.34

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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.