Home / 20,969.14-31,454.58-6,739.06

Finding the Fourth Proportional to 20,969.14, 31,454.58 and 6,739.06

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Solution

The fourth proportional to 20,969.14, 31,454.58 and 6,739.06 is: 10,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.14 : 31,454.58 = 6,739.06 : x
  2. Step 2: Convert to fraction form
    20,969.14/31,454.58 = 6,739.06/x
  3. Step 3: Cross multiply
    20,969.14x = 31,454.58 × 6,739.06
  4. Step 4: Simplify right side
    20,969.14x = 211,974,301.89
  5. Step 5: Solve for x
    x = 211,974,301.89/20,969.14
  6. Step 6: Final answer
    x = 10,108.87

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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.