Home / 14,163.68-21,288.72-13,831.04

Finding the Fourth Proportional to 14,163.68, 21,288.72 and 13,831.04

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Solution

The fourth proportional to 14,163.68, 21,288.72 and 13,831.04 is: 20,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,163.68 : 21,288.72 = 13,831.04 : x
  2. Step 2: Convert to fraction form
    14,163.68/21,288.72 = 13,831.04/x
  3. Step 3: Cross multiply
    14,163.68x = 21,288.72 × 13,831.04
  4. Step 4: Simplify right side
    14,163.68x = 294,445,137.87
  5. Step 5: Solve for x
    x = 294,445,137.87/14,163.68
  6. Step 6: Final answer
    x = 20,788.75

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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.