Home / 21,004.64-28,985.27-13,046.73

Finding the Fourth Proportional to 21,004.64, 28,985.27 and 13,046.73

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Solution

The fourth proportional to 21,004.64, 28,985.27 and 13,046.73 is: 18,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.64 : 28,985.27 = 13,046.73 : x
  2. Step 2: Convert to fraction form
    21,004.64/28,985.27 = 13,046.73/x
  3. Step 3: Cross multiply
    21,004.64x = 28,985.27 × 13,046.73
  4. Step 4: Simplify right side
    21,004.64x = 378,162,991.67
  5. Step 5: Solve for x
    x = 378,162,991.67/21,004.64
  6. Step 6: Final answer
    x = 18,003.78

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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.