Home / 21,171.37-31,729.37-8,676.77

Finding the Fourth Proportional to 21,171.37, 31,729.37 and 8,676.77

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Solution

The fourth proportional to 21,171.37, 31,729.37 and 8,676.77 is: 13,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.37 : 31,729.37 = 8,676.77 : x
  2. Step 2: Convert to fraction form
    21,171.37/31,729.37 = 8,676.77/x
  3. Step 3: Cross multiply
    21,171.37x = 31,729.37 × 8,676.77
  4. Step 4: Simplify right side
    21,171.37x = 275,308,427.77
  5. Step 5: Solve for x
    x = 275,308,427.77/21,171.37
  6. Step 6: Final answer
    x = 13,003.81

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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.