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Finding the Fourth Proportional to 18,387.54, 27,577.22 and 7,291.25

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Solution

The fourth proportional to 18,387.54, 27,577.22 and 7,291.25 is: 10,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.54 : 27,577.22 = 7,291.25 : x
  2. Step 2: Convert to fraction form
    18,387.54/27,577.22 = 7,291.25/x
  3. Step 3: Cross multiply
    18,387.54x = 27,577.22 × 7,291.25
  4. Step 4: Simplify right side
    18,387.54x = 201,072,455.87
  5. Step 5: Solve for x
    x = 201,072,455.87/18,387.54
  6. Step 6: Final answer
    x = 10,935.25

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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.