Home / 21,018.36-29,004.44-11,458.02

Finding the Fourth Proportional to 21,018.36, 29,004.44 and 11,458.02

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Solution

The fourth proportional to 21,018.36, 29,004.44 and 11,458.02 is: 15,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.36 : 29,004.44 = 11,458.02 : x
  2. Step 2: Convert to fraction form
    21,018.36/29,004.44 = 11,458.02/x
  3. Step 3: Cross multiply
    21,018.36x = 29,004.44 × 11,458.02
  4. Step 4: Simplify right side
    21,018.36x = 332,333,453.61
  5. Step 5: Solve for x
    x = 332,333,453.61/21,018.36
  6. Step 6: Final answer
    x = 15,811.58

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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.