Home / 17,981.88-26,948.19-11,412.68

Finding the Fourth Proportional to 17,981.88, 26,948.19 and 11,412.68

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Solution

The fourth proportional to 17,981.88, 26,948.19 and 11,412.68 is: 17,103.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.88 : 26,948.19 = 11,412.68 : x
  2. Step 2: Convert to fraction form
    17,981.88/26,948.19 = 11,412.68/x
  3. Step 3: Cross multiply
    17,981.88x = 26,948.19 × 11,412.68
  4. Step 4: Simplify right side
    17,981.88x = 307,551,069.05
  5. Step 5: Solve for x
    x = 307,551,069.05/17,981.88
  6. Step 6: Final answer
    x = 17,103.39

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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.