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Finding the Fourth Proportional to 18,172.23, 25,062.23 and 12,516.14

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Solution

The fourth proportional to 18,172.23, 25,062.23 and 12,516.14 is: 17,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.23 : 25,062.23 = 12,516.14 : x
  2. Step 2: Convert to fraction form
    18,172.23/25,062.23 = 12,516.14/x
  3. Step 3: Cross multiply
    18,172.23x = 25,062.23 × 12,516.14
  4. Step 4: Simplify right side
    18,172.23x = 313,682,191.50
  5. Step 5: Solve for x
    x = 313,682,191.50/18,172.23
  6. Step 6: Final answer
    x = 17,261.62

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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.