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Finding the Fourth Proportional to 14,235.45, 21,355.21 and 4,375.55

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Solution

The fourth proportional to 14,235.45, 21,355.21 and 4,375.55 is: 6,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,235.45 : 21,355.21 = 4,375.55 : x
  2. Step 2: Convert to fraction form
    14,235.45/21,355.21 = 4,375.55/x
  3. Step 3: Cross multiply
    14,235.45x = 21,355.21 × 4,375.55
  4. Step 4: Simplify right side
    14,235.45x = 93,440,847.97
  5. Step 5: Solve for x
    x = 93,440,847.97/14,235.45
  6. Step 6: Final answer
    x = 6,563.96

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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.