Home / 18,418.06-25,390.18-12,744.16

Finding the Fourth Proportional to 18,418.06, 25,390.18 and 12,744.16

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Solution

The fourth proportional to 18,418.06, 25,390.18 and 12,744.16 is: 17,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.06 : 25,390.18 = 12,744.16 : x
  2. Step 2: Convert to fraction form
    18,418.06/25,390.18 = 12,744.16/x
  3. Step 3: Cross multiply
    18,418.06x = 25,390.18 × 12,744.16
  4. Step 4: Simplify right side
    18,418.06x = 323,576,516.35
  5. Step 5: Solve for x
    x = 323,576,516.35/18,418.06
  6. Step 6: Final answer
    x = 17,568.44

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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.