Home / 13,884.84-20,828.62-5,118.60

Finding the Fourth Proportional to 13,884.84, 20,828.62 and 5,118.60

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Solution

The fourth proportional to 13,884.84, 20,828.62 and 5,118.60 is: 7,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.84 : 20,828.62 = 5,118.60 : x
  2. Step 2: Convert to fraction form
    13,884.84/20,828.62 = 5,118.60/x
  3. Step 3: Cross multiply
    13,884.84x = 20,828.62 × 5,118.60
  4. Step 4: Simplify right side
    13,884.84x = 106,613,374.33
  5. Step 5: Solve for x
    x = 106,613,374.33/13,884.84
  6. Step 6: Final answer
    x = 7,678.40

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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.