Home / 20,168.08-27,831.07-11,216.42

Finding the Fourth Proportional to 20,168.08, 27,831.07 and 11,216.42

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Solution

The fourth proportional to 20,168.08, 27,831.07 and 11,216.42 is: 15,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.08 : 27,831.07 = 11,216.42 : x
  2. Step 2: Convert to fraction form
    20,168.08/27,831.07 = 11,216.42/x
  3. Step 3: Cross multiply
    20,168.08x = 27,831.07 × 11,216.42
  4. Step 4: Simplify right side
    20,168.08x = 312,164,802.97
  5. Step 5: Solve for x
    x = 312,164,802.97/20,168.08
  6. Step 6: Final answer
    x = 15,478.16

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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.