Home / 20,896.95-28,837.68-12,403.29

Finding the Fourth Proportional to 20,896.95, 28,837.68 and 12,403.29

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Solution

The fourth proportional to 20,896.95, 28,837.68 and 12,403.29 is: 17,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.95 : 28,837.68 = 12,403.29 : x
  2. Step 2: Convert to fraction form
    20,896.95/28,837.68 = 12,403.29/x
  3. Step 3: Cross multiply
    20,896.95x = 28,837.68 × 12,403.29
  4. Step 4: Simplify right side
    20,896.95x = 357,682,107.97
  5. Step 5: Solve for x
    x = 357,682,107.97/20,896.95
  6. Step 6: Final answer
    x = 17,116.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.