Home / 21,914.28-30,241.71-11,842.72

Finding the Fourth Proportional to 21,914.28, 30,241.71 and 11,842.72

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Solution

The fourth proportional to 21,914.28, 30,241.71 and 11,842.72 is: 16,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.28 : 30,241.71 = 11,842.72 : x
  2. Step 2: Convert to fraction form
    21,914.28/30,241.71 = 11,842.72/x
  3. Step 3: Cross multiply
    21,914.28x = 30,241.71 × 11,842.72
  4. Step 4: Simplify right side
    21,914.28x = 358,143,982.25
  5. Step 5: Solve for x
    x = 358,143,982.25/21,914.28
  6. Step 6: Final answer
    x = 16,342.95

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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.