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Finding the Fourth Proportional to 18,684.83, 28,027.99 and 7,442.30

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Solution

The fourth proportional to 18,684.83, 28,027.99 and 7,442.30 is: 11,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.83 : 28,027.99 = 7,442.30 : x
  2. Step 2: Convert to fraction form
    18,684.83/28,027.99 = 7,442.30/x
  3. Step 3: Cross multiply
    18,684.83x = 28,027.99 × 7,442.30
  4. Step 4: Simplify right side
    18,684.83x = 208,592,709.98
  5. Step 5: Solve for x
    x = 208,592,709.98/18,684.83
  6. Step 6: Final answer
    x = 11,163.75

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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.