Home / 28,629.60-42,924.40-16,936.80

Finding the Fourth Proportional to 28,629.60, 42,924.40 and 16,936.80

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Solution

The fourth proportional to 28,629.60, 42,924.40 and 16,936.80 is: 25,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.60 : 42,924.40 = 16,936.80 : x
  2. Step 2: Convert to fraction form
    28,629.60/42,924.40 = 16,936.80/x
  3. Step 3: Cross multiply
    28,629.60x = 42,924.40 × 16,936.80
  4. Step 4: Simplify right side
    28,629.60x = 727,001,977.92
  5. Step 5: Solve for x
    x = 727,001,977.92/28,629.60
  6. Step 6: Final answer
    x = 25,393.37

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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.