Home / 18,464.40-27,701.28-5,317.92

Finding the Fourth Proportional to 18,464.40, 27,701.28 and 5,317.92

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Solution

The fourth proportional to 18,464.40, 27,701.28 and 5,317.92 is: 7,978.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,464.40 : 27,701.28 = 5,317.92 : x
  2. Step 2: Convert to fraction form
    18,464.40/27,701.28 = 5,317.92/x
  3. Step 3: Cross multiply
    18,464.40x = 27,701.28 × 5,317.92
  4. Step 4: Simplify right side
    18,464.40x = 147,313,190.94
  5. Step 5: Solve for x
    x = 147,313,190.94/18,464.40
  6. Step 6: Final answer
    x = 7,978.23

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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.