Home / 13,287.39-19,933.82-11,111.32

Finding the Fourth Proportional to 13,287.39, 19,933.82 and 11,111.32

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Solution

The fourth proportional to 13,287.39, 19,933.82 and 11,111.32 is: 16,669.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.39 : 19,933.82 = 11,111.32 : x
  2. Step 2: Convert to fraction form
    13,287.39/19,933.82 = 11,111.32/x
  3. Step 3: Cross multiply
    13,287.39x = 19,933.82 × 11,111.32
  4. Step 4: Simplify right side
    13,287.39x = 221,491,052.84
  5. Step 5: Solve for x
    x = 221,491,052.84/13,287.39
  6. Step 6: Final answer
    x = 16,669.27

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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.