Home / 18,429.42-25,425.38-11,343.54

Finding the Fourth Proportional to 18,429.42, 25,425.38 and 11,343.54

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Solution

The fourth proportional to 18,429.42, 25,425.38 and 11,343.54 is: 15,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.42 : 25,425.38 = 11,343.54 : x
  2. Step 2: Convert to fraction form
    18,429.42/25,425.38 = 11,343.54/x
  3. Step 3: Cross multiply
    18,429.42x = 25,425.38 × 11,343.54
  4. Step 4: Simplify right side
    18,429.42x = 288,413,815.05
  5. Step 5: Solve for x
    x = 288,413,815.05/18,429.42
  6. Step 6: Final answer
    x = 15,649.64

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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.