Home / 18,831.36-25,986.96-10,447.68

Finding the Fourth Proportional to 18,831.36, 25,986.96 and 10,447.68

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Solution

The fourth proportional to 18,831.36, 25,986.96 and 10,447.68 is: 14,417.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.36 : 25,986.96 = 10,447.68 : x
  2. Step 2: Convert to fraction form
    18,831.36/25,986.96 = 10,447.68/x
  3. Step 3: Cross multiply
    18,831.36x = 25,986.96 × 10,447.68
  4. Step 4: Simplify right side
    18,831.36x = 271,503,442.25
  5. Step 5: Solve for x
    x = 271,503,442.25/18,831.36
  6. Step 6: Final answer
    x = 14,417.62

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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.