Home / 28,300.20-42,450.30-8,577.78

Finding the Fourth Proportional to 28,300.20, 42,450.30 and 8,577.78

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Solution

The fourth proportional to 28,300.20, 42,450.30 and 8,577.78 is: 12,866.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.20 : 42,450.30 = 8,577.78 : x
  2. Step 2: Convert to fraction form
    28,300.20/42,450.30 = 8,577.78/x
  3. Step 3: Cross multiply
    28,300.20x = 42,450.30 × 8,577.78
  4. Step 4: Simplify right side
    28,300.20x = 364,129,334.33
  5. Step 5: Solve for x
    x = 364,129,334.33/28,300.20
  6. Step 6: Final answer
    x = 12,866.67

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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.