Home / 19,589.30-29,371.80-11,265.20

Finding the Fourth Proportional to 19,589.30, 29,371.80 and 11,265.20

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Solution

The fourth proportional to 19,589.30, 29,371.80 and 11,265.20 is: 16,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,589.30 : 29,371.80 = 11,265.20 : x
  2. Step 2: Convert to fraction form
    19,589.30/29,371.80 = 11,265.20/x
  3. Step 3: Cross multiply
    19,589.30x = 29,371.80 × 11,265.20
  4. Step 4: Simplify right side
    19,589.30x = 330,879,201.36
  5. Step 5: Solve for x
    x = 330,879,201.36/19,589.30
  6. Step 6: Final answer
    x = 16,890.81

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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.