Home / 19,861.56-27,408.88-11,247.60

Finding the Fourth Proportional to 19,861.56, 27,408.88 and 11,247.60

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Solution

The fourth proportional to 19,861.56, 27,408.88 and 11,247.60 is: 15,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.56 : 27,408.88 = 11,247.60 : x
  2. Step 2: Convert to fraction form
    19,861.56/27,408.88 = 11,247.60/x
  3. Step 3: Cross multiply
    19,861.56x = 27,408.88 × 11,247.60
  4. Step 4: Simplify right side
    19,861.56x = 308,284,118.69
  5. Step 5: Solve for x
    x = 308,284,118.69/19,861.56
  6. Step 6: Final answer
    x = 15,521.65

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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.