Home / 20,630.12-30,942.72-8,944.28

Finding the Fourth Proportional to 20,630.12, 30,942.72 and 8,944.28

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Solution

The fourth proportional to 20,630.12, 30,942.72 and 8,944.28 is: 13,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.12 : 30,942.72 = 8,944.28 : x
  2. Step 2: Convert to fraction form
    20,630.12/30,942.72 = 8,944.28/x
  3. Step 3: Cross multiply
    20,630.12x = 30,942.72 × 8,944.28
  4. Step 4: Simplify right side
    20,630.12x = 276,760,351.64
  5. Step 5: Solve for x
    x = 276,760,351.64/20,630.12
  6. Step 6: Final answer
    x = 13,415.35

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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.