Home / 21,101.37-31,663.07-15,305.82

Finding the Fourth Proportional to 21,101.37, 31,663.07 and 15,305.82

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Solution

The fourth proportional to 21,101.37, 31,663.07 and 15,305.82 is: 22,966.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.37 : 31,663.07 = 15,305.82 : x
  2. Step 2: Convert to fraction form
    21,101.37/31,663.07 = 15,305.82/x
  3. Step 3: Cross multiply
    21,101.37x = 31,663.07 × 15,305.82
  4. Step 4: Simplify right side
    21,101.37x = 484,629,173.54
  5. Step 5: Solve for x
    x = 484,629,173.54/21,101.37
  6. Step 6: Final answer
    x = 22,966.72

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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.