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Finding the Fourth Proportional to 18,887.91, 28,338.02 and 9,027.95

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Solution

The fourth proportional to 18,887.91, 28,338.02 and 9,027.95 is: 13,544.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.91 : 28,338.02 = 9,027.95 : x
  2. Step 2: Convert to fraction form
    18,887.91/28,338.02 = 9,027.95/x
  3. Step 3: Cross multiply
    18,887.91x = 28,338.02 × 9,027.95
  4. Step 4: Simplify right side
    18,887.91x = 255,834,321.07
  5. Step 5: Solve for x
    x = 255,834,321.07/18,887.91
  6. Step 6: Final answer
    x = 13,544.88

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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.