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Finding the Fourth Proportional to 18,147.44, 27,218.26 and 7,059.20

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Solution

The fourth proportional to 18,147.44, 27,218.26 and 7,059.20 is: 10,587.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.44 : 27,218.26 = 7,059.20 : x
  2. Step 2: Convert to fraction form
    18,147.44/27,218.26 = 7,059.20/x
  3. Step 3: Cross multiply
    18,147.44x = 27,218.26 × 7,059.20
  4. Step 4: Simplify right side
    18,147.44x = 192,139,140.99
  5. Step 5: Solve for x
    x = 192,139,140.99/18,147.44
  6. Step 6: Final answer
    x = 10,587.67

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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.