Home / 13,831.32-20,750.64-3,971.19

Finding the Fourth Proportional to 13,831.32, 20,750.64 and 3,971.19

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Solution

The fourth proportional to 13,831.32, 20,750.64 and 3,971.19 is: 5,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.32 : 20,750.64 = 3,971.19 : x
  2. Step 2: Convert to fraction form
    13,831.32/20,750.64 = 3,971.19/x
  3. Step 3: Cross multiply
    13,831.32x = 20,750.64 × 3,971.19
  4. Step 4: Simplify right side
    13,831.32x = 82,404,734.06
  5. Step 5: Solve for x
    x = 82,404,734.06/13,831.32
  6. Step 6: Final answer
    x = 5,957.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.