Home / 28,957.11-43,438.90-9,231.09

Finding the Fourth Proportional to 28,957.11, 43,438.90 and 9,231.09

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Solution

The fourth proportional to 28,957.11, 43,438.90 and 9,231.09 is: 13,847.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,957.11 : 43,438.90 = 9,231.09 : x
  2. Step 2: Convert to fraction form
    28,957.11/43,438.90 = 9,231.09/x
  3. Step 3: Cross multiply
    28,957.11x = 43,438.90 × 9,231.09
  4. Step 4: Simplify right side
    28,957.11x = 400,988,342.80
  5. Step 5: Solve for x
    x = 400,988,342.80/28,957.11
  6. Step 6: Final answer
    x = 13,847.67

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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.