Home / 20,167.54-27,831.86-11,215.42

Finding the Fourth Proportional to 20,167.54, 27,831.86 and 11,215.42

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Solution

The fourth proportional to 20,167.54, 27,831.86 and 11,215.42 is: 15,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.54 : 27,831.86 = 11,215.42 : x
  2. Step 2: Convert to fraction form
    20,167.54/27,831.86 = 11,215.42/x
  3. Step 3: Cross multiply
    20,167.54x = 27,831.86 × 11,215.42
  4. Step 4: Simplify right side
    20,167.54x = 312,145,999.28
  5. Step 5: Solve for x
    x = 312,145,999.28/20,167.54
  6. Step 6: Final answer
    x = 15,477.64

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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.