Home / 28,905.60-43,336.80-15,772.80

Finding the Fourth Proportional to 28,905.60, 43,336.80 and 15,772.80

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Solution

The fourth proportional to 28,905.60, 43,336.80 and 15,772.80 is: 23,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.60 : 43,336.80 = 15,772.80 : x
  2. Step 2: Convert to fraction form
    28,905.60/43,336.80 = 15,772.80/x
  3. Step 3: Cross multiply
    28,905.60x = 43,336.80 × 15,772.80
  4. Step 4: Simplify right side
    28,905.60x = 683,542,679.04
  5. Step 5: Solve for x
    x = 683,542,679.04/28,905.60
  6. Step 6: Final answer
    x = 23,647.41

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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.