Home / 21,198.09-31,776.32-11,842.59

Finding the Fourth Proportional to 21,198.09, 31,776.32 and 11,842.59

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Solution

The fourth proportional to 21,198.09, 31,776.32 and 11,842.59 is: 17,752.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.09 : 31,776.32 = 11,842.59 : x
  2. Step 2: Convert to fraction form
    21,198.09/31,776.32 = 11,842.59/x
  3. Step 3: Cross multiply
    21,198.09x = 31,776.32 × 11,842.59
  4. Step 4: Simplify right side
    21,198.09x = 376,313,870.26
  5. Step 5: Solve for x
    x = 376,313,870.26/21,198.09
  6. Step 6: Final answer
    x = 17,752.25

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1.5x scale

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.