Home / 20,620.24-30,927.48-8,778.76

Finding the Fourth Proportional to 20,620.24, 30,927.48 and 8,778.76

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Solution

The fourth proportional to 20,620.24, 30,927.48 and 8,778.76 is: 13,166.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.24 : 30,927.48 = 8,778.76 : x
  2. Step 2: Convert to fraction form
    20,620.24/30,927.48 = 8,778.76/x
  3. Step 3: Cross multiply
    20,620.24x = 30,927.48 × 8,778.76
  4. Step 4: Simplify right side
    20,620.24x = 271,504,924.32
  5. Step 5: Solve for x
    x = 271,504,924.32/20,620.24
  6. Step 6: Final answer
    x = 13,166.91

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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.