Home / 18,019.37-27,029.55-4,871.72

Finding the Fourth Proportional to 18,019.37, 27,029.55 and 4,871.72

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Solution

The fourth proportional to 18,019.37, 27,029.55 and 4,871.72 is: 7,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.37 : 27,029.55 = 4,871.72 : x
  2. Step 2: Convert to fraction form
    18,019.37/27,029.55 = 4,871.72/x
  3. Step 3: Cross multiply
    18,019.37x = 27,029.55 × 4,871.72
  4. Step 4: Simplify right side
    18,019.37x = 131,680,399.33
  5. Step 5: Solve for x
    x = 131,680,399.33/18,019.37
  6. Step 6: Final answer
    x = 7,307.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.