Home / 16,858.60-25,289.10-5,171.80

Finding the Fourth Proportional to 16,858.60, 25,289.10 and 5,171.80

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Solution

The fourth proportional to 16,858.60, 25,289.10 and 5,171.80 is: 7,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,858.60 : 25,289.10 = 5,171.80 : x
  2. Step 2: Convert to fraction form
    16,858.60/25,289.10 = 5,171.80/x
  3. Step 3: Cross multiply
    16,858.60x = 25,289.10 × 5,171.80
  4. Step 4: Simplify right side
    16,858.60x = 130,790,167.38
  5. Step 5: Solve for x
    x = 130,790,167.38/16,858.60
  6. Step 6: Final answer
    x = 7,758.07

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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.