Home / 12,831.36-17,719.51-12,132.51

Finding the Fourth Proportional to 12,831.36, 17,719.51 and 12,132.51

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Solution

The fourth proportional to 12,831.36, 17,719.51 and 12,132.51 is: 16,754.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.36 : 17,719.51 = 12,132.51 : x
  2. Step 2: Convert to fraction form
    12,831.36/17,719.51 = 12,132.51/x
  3. Step 3: Cross multiply
    12,831.36x = 17,719.51 × 12,132.51
  4. Step 4: Simplify right side
    12,831.36x = 214,982,027.31
  5. Step 5: Solve for x
    x = 214,982,027.31/12,831.36
  6. Step 6: Final answer
    x = 16,754.42

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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.