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Finding the Fourth Proportional to 18,844.99, 28,268.09 and 9,479.89

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Solution

The fourth proportional to 18,844.99, 28,268.09 and 9,479.89 is: 14,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844.99 : 28,268.09 = 9,479.89 : x
  2. Step 2: Convert to fraction form
    18,844.99/28,268.09 = 9,479.89/x
  3. Step 3: Cross multiply
    18,844.99x = 28,268.09 × 9,479.89
  4. Step 4: Simplify right side
    18,844.99x = 267,978,336.31
  5. Step 5: Solve for x
    x = 267,978,336.31/18,844.99
  6. Step 6: Final answer
    x = 14,220.14

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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.