Home / 20,450.42-30,675.63-8,762.66

Finding the Fourth Proportional to 20,450.42, 30,675.63 and 8,762.66

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Solution

The fourth proportional to 20,450.42, 30,675.63 and 8,762.66 is: 13,143.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.42 : 30,675.63 = 8,762.66 : x
  2. Step 2: Convert to fraction form
    20,450.42/30,675.63 = 8,762.66/x
  3. Step 3: Cross multiply
    20,450.42x = 30,675.63 × 8,762.66
  4. Step 4: Simplify right side
    20,450.42x = 268,800,115.98
  5. Step 5: Solve for x
    x = 268,800,115.98/20,450.42
  6. Step 6: Final answer
    x = 13,143.99

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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.