Home / 28,072.40-42,108.60-16,845.80

Finding the Fourth Proportional to 28,072.40, 42,108.60 and 16,845.80

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Solution

The fourth proportional to 28,072.40, 42,108.60 and 16,845.80 is: 25,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.40 : 42,108.60 = 16,845.80 : x
  2. Step 2: Convert to fraction form
    28,072.40/42,108.60 = 16,845.80/x
  3. Step 3: Cross multiply
    28,072.40x = 42,108.60 × 16,845.80
  4. Step 4: Simplify right side
    28,072.40x = 709,353,053.88
  5. Step 5: Solve for x
    x = 709,353,053.88/28,072.40
  6. Step 6: Final answer
    x = 25,268.70

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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.