Home / 13,391.23-18,480.42-8,085.04

Finding the Fourth Proportional to 13,391.23, 18,480.42 and 8,085.04

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Solution

The fourth proportional to 13,391.23, 18,480.42 and 8,085.04 is: 11,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.23 : 18,480.42 = 8,085.04 : x
  2. Step 2: Convert to fraction form
    13,391.23/18,480.42 = 8,085.04/x
  3. Step 3: Cross multiply
    13,391.23x = 18,480.42 × 8,085.04
  4. Step 4: Simplify right side
    13,391.23x = 149,414,934.92
  5. Step 5: Solve for x
    x = 149,414,934.92/13,391.23
  6. Step 6: Final answer
    x = 11,157.67

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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.