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Finding the Fourth Proportional to 18,488.57, 27,732.43 and 12,550.64

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Solution

The fourth proportional to 18,488.57, 27,732.43 and 12,550.64 is: 18,825.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.57 : 27,732.43 = 12,550.64 : x
  2. Step 2: Convert to fraction form
    18,488.57/27,732.43 = 12,550.64/x
  3. Step 3: Cross multiply
    18,488.57x = 27,732.43 × 12,550.64
  4. Step 4: Simplify right side
    18,488.57x = 348,059,745.26
  5. Step 5: Solve for x
    x = 348,059,745.26/18,488.57
  6. Step 6: Final answer
    x = 18,825.67

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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.