Home / 20,914.08-31,362-6,122.68

Finding the Fourth Proportional to 20,914.08, 31,362 and 6,122.68

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Solution

The fourth proportional to 20,914.08, 31,362 and 6,122.68 is: 9,181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.08 : 31,362 = 6,122.68 : x
  2. Step 2: Convert to fraction form
    20,914.08/31,362 = 6,122.68/x
  3. Step 3: Cross multiply
    20,914.08x = 31,362 × 6,122.68
  4. Step 4: Simplify right side
    20,914.08x = 192,019,490.16
  5. Step 5: Solve for x
    x = 192,019,490.16/20,914.08
  6. Step 6: Final answer
    x = 9,181.35

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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.