Home / 12,388.93-17,091.02-7,910.44

Finding the Fourth Proportional to 12,388.93, 17,091.02 and 7,910.44

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Solution

The fourth proportional to 12,388.93, 17,091.02 and 7,910.44 is: 10,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.93 : 17,091.02 = 7,910.44 : x
  2. Step 2: Convert to fraction form
    12,388.93/17,091.02 = 7,910.44/x
  3. Step 3: Cross multiply
    12,388.93x = 17,091.02 × 7,910.44
  4. Step 4: Simplify right side
    12,388.93x = 135,197,465.30
  5. Step 5: Solve for x
    x = 135,197,465.30/12,388.93
  6. Step 6: Final answer
    x = 10,912.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.