Home / 21,739.74-29,999.40-12,177.96

Finding the Fourth Proportional to 21,739.74, 29,999.40 and 12,177.96

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Solution

The fourth proportional to 21,739.74, 29,999.40 and 12,177.96 is: 16,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.74 : 29,999.40 = 12,177.96 : x
  2. Step 2: Convert to fraction form
    21,739.74/29,999.40 = 12,177.96/x
  3. Step 3: Cross multiply
    21,739.74x = 29,999.40 × 12,177.96
  4. Step 4: Simplify right side
    21,739.74x = 365,331,493.22
  5. Step 5: Solve for x
    x = 365,331,493.22/21,739.74
  6. Step 6: Final answer
    x = 16,804.78

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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.