Home / 20,580.98-30,912.84-12,277.22

Finding the Fourth Proportional to 20,580.98, 30,912.84 and 12,277.22

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Solution

The fourth proportional to 20,580.98, 30,912.84 and 12,277.22 is: 18,440.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.98 : 30,912.84 = 12,277.22 : x
  2. Step 2: Convert to fraction form
    20,580.98/30,912.84 = 12,277.22/x
  3. Step 3: Cross multiply
    20,580.98x = 30,912.84 × 12,277.22
  4. Step 4: Simplify right side
    20,580.98x = 379,523,737.50
  5. Step 5: Solve for x
    x = 379,523,737.50/20,580.98
  6. Step 6: Final answer
    x = 18,440.51

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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.