Home / 19,954.21-29,928.87-5,161.90

Finding the Fourth Proportional to 19,954.21, 29,928.87 and 5,161.90

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Solution

The fourth proportional to 19,954.21, 29,928.87 and 5,161.90 is: 7,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,954.21 : 29,928.87 = 5,161.90 : x
  2. Step 2: Convert to fraction form
    19,954.21/29,928.87 = 5,161.90/x
  3. Step 3: Cross multiply
    19,954.21x = 29,928.87 × 5,161.90
  4. Step 4: Simplify right side
    19,954.21x = 154,489,834.05
  5. Step 5: Solve for x
    x = 154,489,834.05/19,954.21
  6. Step 6: Final answer
    x = 7,742.22

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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.