Home / 20,955.24-31,395.84-11,072.64

Finding the Fourth Proportional to 20,955.24, 31,395.84 and 11,072.64

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Solution

The fourth proportional to 20,955.24, 31,395.84 and 11,072.64 is: 16,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.24 : 31,395.84 = 11,072.64 : x
  2. Step 2: Convert to fraction form
    20,955.24/31,395.84 = 11,072.64/x
  3. Step 3: Cross multiply
    20,955.24x = 31,395.84 × 11,072.64
  4. Step 4: Simplify right side
    20,955.24x = 347,634,833.82
  5. Step 5: Solve for x
    x = 347,634,833.82/20,955.24
  6. Step 6: Final answer
    x = 16,589.40

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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.