Home / 16,858.20-25,287.30-5,171.40

Finding the Fourth Proportional to 16,858.20, 25,287.30 and 5,171.40

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Solution

The fourth proportional to 16,858.20, 25,287.30 and 5,171.40 is: 7,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,858.20 : 25,287.30 = 5,171.40 : x
  2. Step 2: Convert to fraction form
    16,858.20/25,287.30 = 5,171.40/x
  3. Step 3: Cross multiply
    16,858.20x = 25,287.30 × 5,171.40
  4. Step 4: Simplify right side
    16,858.20x = 130,770,743.22
  5. Step 5: Solve for x
    x = 130,770,743.22/16,858.20
  6. Step 6: Final answer
    x = 7,757.10

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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.