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Finding the Fourth Proportional to 19,201.73, 28,785.65 and 9,201.06

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Solution

The fourth proportional to 19,201.73, 28,785.65 and 9,201.06 is: 13,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.73 : 28,785.65 = 9,201.06 : x
  2. Step 2: Convert to fraction form
    19,201.73/28,785.65 = 9,201.06/x
  3. Step 3: Cross multiply
    19,201.73x = 28,785.65 × 9,201.06
  4. Step 4: Simplify right side
    19,201.73x = 264,858,446.78
  5. Step 5: Solve for x
    x = 264,858,446.78/19,201.73
  6. Step 6: Final answer
    x = 13,793.47

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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.