Home / 21,850.75-30,154.04-11,914.75

Finding the Fourth Proportional to 21,850.75, 30,154.04 and 11,914.75

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Solution

The fourth proportional to 21,850.75, 30,154.04 and 11,914.75 is: 16,442.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.75 : 30,154.04 = 11,914.75 : x
  2. Step 2: Convert to fraction form
    21,850.75/30,154.04 = 11,914.75/x
  3. Step 3: Cross multiply
    21,850.75x = 30,154.04 × 11,914.75
  4. Step 4: Simplify right side
    21,850.75x = 359,277,848.09
  5. Step 5: Solve for x
    x = 359,277,848.09/21,850.75
  6. Step 6: Final answer
    x = 16,442.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.