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Finding the Fourth Proportional to 18,242.94, 27,371.02 and 7,157.21

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Solution

The fourth proportional to 18,242.94, 27,371.02 and 7,157.21 is: 10,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242.94 : 27,371.02 = 7,157.21 : x
  2. Step 2: Convert to fraction form
    18,242.94/27,371.02 = 7,157.21/x
  3. Step 3: Cross multiply
    18,242.94x = 27,371.02 × 7,157.21
  4. Step 4: Simplify right side
    18,242.94x = 195,900,010.15
  5. Step 5: Solve for x
    x = 195,900,010.15/18,242.94
  6. Step 6: Final answer
    x = 10,738.40

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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.