Home / 11,678.06-16,115.73-7,486.31

Finding the Fourth Proportional to 11,678.06, 16,115.73 and 7,486.31

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Solution

The fourth proportional to 11,678.06, 16,115.73 and 7,486.31 is: 10,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.06 : 16,115.73 = 7,486.31 : x
  2. Step 2: Convert to fraction form
    11,678.06/16,115.73 = 7,486.31/x
  3. Step 3: Cross multiply
    11,678.06x = 16,115.73 × 7,486.31
  4. Step 4: Simplify right side
    11,678.06x = 120,647,350.66
  5. Step 5: Solve for x
    x = 120,647,350.66/11,678.06
  6. Step 6: Final answer
    x = 10,331.11

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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.