Home / 13,622.32-20,447.80-12,072.24

Finding the Fourth Proportional to 13,622.32, 20,447.80 and 12,072.24

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Solution

The fourth proportional to 13,622.32, 20,447.80 and 12,072.24 is: 18,121.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.32 : 20,447.80 = 12,072.24 : x
  2. Step 2: Convert to fraction form
    13,622.32/20,447.80 = 12,072.24/x
  3. Step 3: Cross multiply
    13,622.32x = 20,447.80 × 12,072.24
  4. Step 4: Simplify right side
    13,622.32x = 246,850,749.07
  5. Step 5: Solve for x
    x = 246,850,749.07/13,622.32
  6. Step 6: Final answer
    x = 18,121.05

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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.