Home / 13,831.12-20,746.59-8,286.04

Finding the Fourth Proportional to 13,831.12, 20,746.59 and 8,286.04

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Solution

The fourth proportional to 13,831.12, 20,746.59 and 8,286.04 is: 12,429.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.12 : 20,746.59 = 8,286.04 : x
  2. Step 2: Convert to fraction form
    13,831.12/20,746.59 = 8,286.04/x
  3. Step 3: Cross multiply
    13,831.12x = 20,746.59 × 8,286.04
  4. Step 4: Simplify right side
    13,831.12x = 171,907,074.60
  5. Step 5: Solve for x
    x = 171,907,074.60/13,831.12
  6. Step 6: Final answer
    x = 12,429.01

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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.