Home / 18,568.98-27,854.69-5,420.25

Finding the Fourth Proportional to 18,568.98, 27,854.69 and 5,420.25

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Solution

The fourth proportional to 18,568.98, 27,854.69 and 5,420.25 is: 8,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.98 : 27,854.69 = 5,420.25 : x
  2. Step 2: Convert to fraction form
    18,568.98/27,854.69 = 5,420.25/x
  3. Step 3: Cross multiply
    18,568.98x = 27,854.69 × 5,420.25
  4. Step 4: Simplify right side
    18,568.98x = 150,979,356.37
  5. Step 5: Solve for x
    x = 150,979,356.37/18,568.98
  6. Step 6: Final answer
    x = 8,130.73

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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.