Home / 19,884.60-27,443.36-12,831.56

Finding the Fourth Proportional to 19,884.60, 27,443.36 and 12,831.56

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Solution

The fourth proportional to 19,884.60, 27,443.36 and 12,831.56 is: 17,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.60 : 27,443.36 = 12,831.56 : x
  2. Step 2: Convert to fraction form
    19,884.60/27,443.36 = 12,831.56/x
  3. Step 3: Cross multiply
    19,884.60x = 27,443.36 × 12,831.56
  4. Step 4: Simplify right side
    19,884.60x = 352,141,120.44
  5. Step 5: Solve for x
    x = 352,141,120.44/19,884.60
  6. Step 6: Final answer
    x = 17,709.24

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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.