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Finding the Fourth Proportional to 18,244.26, 27,346.40 and 7,138.74

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Solution

The fourth proportional to 18,244.26, 27,346.40 and 7,138.74 is: 10,700.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,244.26 : 27,346.40 = 7,138.74 : x
  2. Step 2: Convert to fraction form
    18,244.26/27,346.40 = 7,138.74/x
  3. Step 3: Cross multiply
    18,244.26x = 27,346.40 × 7,138.74
  4. Step 4: Simplify right side
    18,244.26x = 195,218,933.16
  5. Step 5: Solve for x
    x = 195,218,933.16/18,244.26
  6. Step 6: Final answer
    x = 10,700.29

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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.