Home / 20,913.94-31,374.06-6,121

Finding the Fourth Proportional to 20,913.94, 31,374.06 and 6,121

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Solution

The fourth proportional to 20,913.94, 31,374.06 and 6,121 is: 9,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.94 : 31,374.06 = 6,121 : x
  2. Step 2: Convert to fraction form
    20,913.94/31,374.06 = 6,121/x
  3. Step 3: Cross multiply
    20,913.94x = 31,374.06 × 6,121
  4. Step 4: Simplify right side
    20,913.94x = 192,040,621.26
  5. Step 5: Solve for x
    x = 192,040,621.26/20,913.94
  6. Step 6: Final answer
    x = 9,182.42

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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.