Home / 18,962.12-28,450.50-7,865.96

Finding the Fourth Proportional to 18,962.12, 28,450.50 and 7,865.96

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Solution

The fourth proportional to 18,962.12, 28,450.50 and 7,865.96 is: 11,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.12 : 28,450.50 = 7,865.96 : x
  2. Step 2: Convert to fraction form
    18,962.12/28,450.50 = 7,865.96/x
  3. Step 3: Cross multiply
    18,962.12x = 28,450.50 × 7,865.96
  4. Step 4: Simplify right side
    18,962.12x = 223,790,494.98
  5. Step 5: Solve for x
    x = 223,790,494.98/18,962.12
  6. Step 6: Final answer
    x = 11,801.98

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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.