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Finding the Fourth Proportional to 18,287.21, 27,437.65 and 7,201.63

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Solution

The fourth proportional to 18,287.21, 27,437.65 and 7,201.63 is: 10,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.21 : 27,437.65 = 7,201.63 : x
  2. Step 2: Convert to fraction form
    18,287.21/27,437.65 = 7,201.63/x
  3. Step 3: Cross multiply
    18,287.21x = 27,437.65 × 7,201.63
  4. Step 4: Simplify right side
    18,287.21x = 197,595,734.78
  5. Step 5: Solve for x
    x = 197,595,734.78/18,287.21
  6. Step 6: Final answer
    x = 10,805.13

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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.