Home / 13,260.51-19,878.39-4,489.29

Finding the Fourth Proportional to 13,260.51, 19,878.39 and 4,489.29

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Solution

The fourth proportional to 13,260.51, 19,878.39 and 4,489.29 is: 6,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.51 : 19,878.39 = 4,489.29 : x
  2. Step 2: Convert to fraction form
    13,260.51/19,878.39 = 4,489.29/x
  3. Step 3: Cross multiply
    13,260.51x = 19,878.39 × 4,489.29
  4. Step 4: Simplify right side
    13,260.51x = 89,239,857.44
  5. Step 5: Solve for x
    x = 89,239,857.44/13,260.51
  6. Step 6: Final answer
    x = 6,729.75

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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.