Home / 18,831.36-25,987.08-10,447.92

Finding the Fourth Proportional to 18,831.36, 25,987.08 and 10,447.92

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Solution

The fourth proportional to 18,831.36, 25,987.08 and 10,447.92 is: 14,418.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.36 : 25,987.08 = 10,447.92 : x
  2. Step 2: Convert to fraction form
    18,831.36/25,987.08 = 10,447.92/x
  3. Step 3: Cross multiply
    18,831.36x = 25,987.08 × 10,447.92
  4. Step 4: Simplify right side
    18,831.36x = 271,510,932.87
  5. Step 5: Solve for x
    x = 271,510,932.87/18,831.36
  6. Step 6: Final answer
    x = 14,418.02

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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.