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Finding the Fourth Proportional to 15,119.12, 20,850.42 and 9,452.06

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Solution

The fourth proportional to 15,119.12, 20,850.42 and 9,452.06 is: 13,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.12 : 20,850.42 = 9,452.06 : x
  2. Step 2: Convert to fraction form
    15,119.12/20,850.42 = 9,452.06/x
  3. Step 3: Cross multiply
    15,119.12x = 20,850.42 × 9,452.06
  4. Step 4: Simplify right side
    15,119.12x = 197,079,420.87
  5. Step 5: Solve for x
    x = 197,079,420.87/15,119.12
  6. Step 6: Final answer
    x = 13,035.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.