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Finding the Fourth Proportional to 28,849.80, 43,270.20 and 9,133.20

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Solution

The fourth proportional to 28,849.80, 43,270.20 and 9,133.20 is: 13,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,849.80 : 43,270.20 = 9,133.20 : x
  2. Step 2: Convert to fraction form
    28,849.80/43,270.20 = 9,133.20/x
  3. Step 3: Cross multiply
    28,849.80x = 43,270.20 × 9,133.20
  4. Step 4: Simplify right side
    28,849.80x = 395,195,390.64
  5. Step 5: Solve for x
    x = 395,195,390.64/28,849.80
  6. Step 6: Final answer
    x = 13,698.38

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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.