Home / 19,491.31-26,891.86-11,929.75

Finding the Fourth Proportional to 19,491.31, 26,891.86 and 11,929.75

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Solution

The fourth proportional to 19,491.31, 26,891.86 and 11,929.75 is: 16,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.31 : 26,891.86 = 11,929.75 : x
  2. Step 2: Convert to fraction form
    19,491.31/26,891.86 = 11,929.75/x
  3. Step 3: Cross multiply
    19,491.31x = 26,891.86 × 11,929.75
  4. Step 4: Simplify right side
    19,491.31x = 320,813,290.05
  5. Step 5: Solve for x
    x = 320,813,290.05/19,491.31
  6. Step 6: Final answer
    x = 16,459.30

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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.