Home / 21,162.80-29,202.60-11,731.16

Finding the Fourth Proportional to 21,162.80, 29,202.60 and 11,731.16

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Solution

The fourth proportional to 21,162.80, 29,202.60 and 11,731.16 is: 16,187.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.80 : 29,202.60 = 11,731.16 : x
  2. Step 2: Convert to fraction form
    21,162.80/29,202.60 = 11,731.16/x
  3. Step 3: Cross multiply
    21,162.80x = 29,202.60 × 11,731.16
  4. Step 4: Simplify right side
    21,162.80x = 342,580,373.02
  5. Step 5: Solve for x
    x = 342,580,373.02/21,162.80
  6. Step 6: Final answer
    x = 16,187.86

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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.