Home / 21,188.07-29,239.44-11,628.12

Finding the Fourth Proportional to 21,188.07, 29,239.44 and 11,628.12

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Solution

The fourth proportional to 21,188.07, 29,239.44 and 11,628.12 is: 16,046.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.07 : 29,239.44 = 11,628.12 : x
  2. Step 2: Convert to fraction form
    21,188.07/29,239.44 = 11,628.12/x
  3. Step 3: Cross multiply
    21,188.07x = 29,239.44 × 11,628.12
  4. Step 4: Simplify right side
    21,188.07x = 339,999,717.05
  5. Step 5: Solve for x
    x = 339,999,717.05/21,188.07
  6. Step 6: Final answer
    x = 16,046.75

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1.5x scale

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.