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Finding the Fourth Proportional to 18,602.20, 27,889.92 and 8,735.99

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Solution

The fourth proportional to 18,602.20, 27,889.92 and 8,735.99 is: 13,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.20 : 27,889.92 = 8,735.99 : x
  2. Step 2: Convert to fraction form
    18,602.20/27,889.92 = 8,735.99/x
  3. Step 3: Cross multiply
    18,602.20x = 27,889.92 × 8,735.99
  4. Step 4: Simplify right side
    18,602.20x = 243,646,062.22
  5. Step 5: Solve for x
    x = 243,646,062.22/18,602.20
  6. Step 6: Final answer
    x = 13,097.70

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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.