Home / 28,982.80-43,409.40-15,115.60

Finding the Fourth Proportional to 28,982.80, 43,409.40 and 15,115.60

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Solution

The fourth proportional to 28,982.80, 43,409.40 and 15,115.60 is: 22,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.80 : 43,409.40 = 15,115.60 : x
  2. Step 2: Convert to fraction form
    28,982.80/43,409.40 = 15,115.60/x
  3. Step 3: Cross multiply
    28,982.80x = 43,409.40 × 15,115.60
  4. Step 4: Simplify right side
    28,982.80x = 656,159,126.64
  5. Step 5: Solve for x
    x = 656,159,126.64/28,982.80
  6. Step 6: Final answer
    x = 22,639.60

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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.