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Finding the Fourth Proportional to 18,270.30, 27,412.65 and 7,175.10

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Solution

The fourth proportional to 18,270.30, 27,412.65 and 7,175.10 is: 10,765.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.30 : 27,412.65 = 7,175.10 : x
  2. Step 2: Convert to fraction form
    18,270.30/27,412.65 = 7,175.10/x
  3. Step 3: Cross multiply
    18,270.30x = 27,412.65 × 7,175.10
  4. Step 4: Simplify right side
    18,270.30x = 196,688,505.02
  5. Step 5: Solve for x
    x = 196,688,505.02/18,270.30
  6. Step 6: Final answer
    x = 10,765.48

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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.