Home / 18,414.45-25,403.25-12,448.20

Finding the Fourth Proportional to 18,414.45, 25,403.25 and 12,448.20

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Solution

The fourth proportional to 18,414.45, 25,403.25 and 12,448.20 is: 17,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.45 : 25,403.25 = 12,448.20 : x
  2. Step 2: Convert to fraction form
    18,414.45/25,403.25 = 12,448.20/x
  3. Step 3: Cross multiply
    18,414.45x = 25,403.25 × 12,448.20
  4. Step 4: Simplify right side
    18,414.45x = 316,224,736.65
  5. Step 5: Solve for x
    x = 316,224,736.65/18,414.45
  6. Step 6: Final answer
    x = 17,172.64

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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.