Home / 13,325.78-19,971.37-5,419.09

Finding the Fourth Proportional to 13,325.78, 19,971.37 and 5,419.09

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Solution

The fourth proportional to 13,325.78, 19,971.37 and 5,419.09 is: 8,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.78 : 19,971.37 = 5,419.09 : x
  2. Step 2: Convert to fraction form
    13,325.78/19,971.37 = 5,419.09/x
  3. Step 3: Cross multiply
    13,325.78x = 19,971.37 × 5,419.09
  4. Step 4: Simplify right side
    13,325.78x = 108,226,662.73
  5. Step 5: Solve for x
    x = 108,226,662.73/13,325.78
  6. Step 6: Final answer
    x = 8,121.60

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1.5x scale

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.