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Finding the Fourth Proportional to 28,740, 43,109.96 and 9,020.07

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Solution

The fourth proportional to 28,740, 43,109.96 and 9,020.07 is: 13,530.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740 : 43,109.96 = 9,020.07 : x
  2. Step 2: Convert to fraction form
    28,740/43,109.96 = 9,020.07/x
  3. Step 3: Cross multiply
    28,740x = 43,109.96 × 9,020.07
  4. Step 4: Simplify right side
    28,740x = 388,854,811.80
  5. Step 5: Solve for x
    x = 388,854,811.80/28,740
  6. Step 6: Final answer
    x = 13,530.09

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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.