Home / 21,946.68-30,286.50-20,272.36

Finding the Fourth Proportional to 21,946.68, 30,286.50 and 20,272.36

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Solution

The fourth proportional to 21,946.68, 30,286.50 and 20,272.36 is: 27,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,946.68 : 30,286.50 = 20,272.36 : x
  2. Step 2: Convert to fraction form
    21,946.68/30,286.50 = 20,272.36/x
  3. Step 3: Cross multiply
    21,946.68x = 30,286.50 × 20,272.36
  4. Step 4: Simplify right side
    21,946.68x = 613,978,831.14
  5. Step 5: Solve for x
    x = 613,978,831.14/21,946.68
  6. Step 6: Final answer
    x = 27,975.93

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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.