Home / 28,104.60-42,165.36-8,383.80

Finding the Fourth Proportional to 28,104.60, 42,165.36 and 8,383.80

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Solution

The fourth proportional to 28,104.60, 42,165.36 and 8,383.80 is: 12,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.60 : 42,165.36 = 8,383.80 : x
  2. Step 2: Convert to fraction form
    28,104.60/42,165.36 = 8,383.80/x
  3. Step 3: Cross multiply
    28,104.60x = 42,165.36 × 8,383.80
  4. Step 4: Simplify right side
    28,104.60x = 353,505,945.17
  5. Step 5: Solve for x
    x = 353,505,945.17/28,104.60
  6. Step 6: Final answer
    x = 12,578.22

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1.5x scale

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.