Home / 20,640.27-30,958.81-11,277.63

Finding the Fourth Proportional to 20,640.27, 30,958.81 and 11,277.63

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Solution

The fourth proportional to 20,640.27, 30,958.81 and 11,277.63 is: 16,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.27 : 30,958.81 = 11,277.63 : x
  2. Step 2: Convert to fraction form
    20,640.27/30,958.81 = 11,277.63/x
  3. Step 3: Cross multiply
    20,640.27x = 30,958.81 × 11,277.63
  4. Step 4: Simplify right side
    20,640.27x = 349,141,976.23
  5. Step 5: Solve for x
    x = 349,141,976.23/20,640.27
  6. Step 6: Final answer
    x = 16,915.57

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1.5x scale

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.