Home / 11,895.78-16,416.60-7,179.14

Finding the Fourth Proportional to 11,895.78, 16,416.60 and 7,179.14

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Solution

The fourth proportional to 11,895.78, 16,416.60 and 7,179.14 is: 9,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.78 : 16,416.60 = 7,179.14 : x
  2. Step 2: Convert to fraction form
    11,895.78/16,416.60 = 7,179.14/x
  3. Step 3: Cross multiply
    11,895.78x = 16,416.60 × 7,179.14
  4. Step 4: Simplify right side
    11,895.78x = 117,857,069.72
  5. Step 5: Solve for x
    x = 117,857,069.72/11,895.78
  6. Step 6: Final answer
    x = 9,907.47

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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.