Home / 13,146.81-19,720.26-3,286.10

Finding the Fourth Proportional to 13,146.81, 19,720.26 and 3,286.10

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Solution

The fourth proportional to 13,146.81, 19,720.26 and 3,286.10 is: 4,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.81 : 19,720.26 = 3,286.10 : x
  2. Step 2: Convert to fraction form
    13,146.81/19,720.26 = 3,286.10/x
  3. Step 3: Cross multiply
    13,146.81x = 19,720.26 × 3,286.10
  4. Step 4: Simplify right side
    13,146.81x = 64,802,647.78
  5. Step 5: Solve for x
    x = 64,802,647.78/13,146.81
  6. Step 6: Final answer
    x = 4,929.15

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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.