Home / 27,640.53-38,144.94-15,705.87

Finding the Fourth Proportional to 27,640.53, 38,144.94 and 15,705.87

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Solution

The fourth proportional to 27,640.53, 38,144.94 and 15,705.87 is: 21,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.53 : 38,144.94 = 15,705.87 : x
  2. Step 2: Convert to fraction form
    27,640.53/38,144.94 = 15,705.87/x
  3. Step 3: Cross multiply
    27,640.53x = 38,144.94 × 15,705.87
  4. Step 4: Simplify right side
    27,640.53x = 599,099,468.80
  5. Step 5: Solve for x
    x = 599,099,468.80/27,640.53
  6. Step 6: Final answer
    x = 21,674.67

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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.