Home / 20,731.16-31,091.70-5,936.60

Finding the Fourth Proportional to 20,731.16, 31,091.70 and 5,936.60

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Solution

The fourth proportional to 20,731.16, 31,091.70 and 5,936.60 is: 8,903.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.16 : 31,091.70 = 5,936.60 : x
  2. Step 2: Convert to fraction form
    20,731.16/31,091.70 = 5,936.60/x
  3. Step 3: Cross multiply
    20,731.16x = 31,091.70 × 5,936.60
  4. Step 4: Simplify right side
    20,731.16x = 184,578,986.22
  5. Step 5: Solve for x
    x = 184,578,986.22/20,731.16
  6. Step 6: Final answer
    x = 8,903.46

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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.