Home / 21,739.33-29,999.94-12,179.56

Finding the Fourth Proportional to 21,739.33, 29,999.94 and 12,179.56

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Solution

The fourth proportional to 21,739.33, 29,999.94 and 12,179.56 is: 16,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.33 : 29,999.94 = 12,179.56 : x
  2. Step 2: Convert to fraction form
    21,739.33/29,999.94 = 12,179.56/x
  3. Step 3: Cross multiply
    21,739.33x = 29,999.94 × 12,179.56
  4. Step 4: Simplify right side
    21,739.33x = 365,385,994.23
  5. Step 5: Solve for x
    x = 365,385,994.23/21,739.33
  6. Step 6: Final answer
    x = 16,807.60

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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.