Home / 11,356.78-15,668.71-6,879.10

Finding the Fourth Proportional to 11,356.78, 15,668.71 and 6,879.10

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Solution

The fourth proportional to 11,356.78, 15,668.71 and 6,879.10 is: 9,490.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.78 : 15,668.71 = 6,879.10 : x
  2. Step 2: Convert to fraction form
    11,356.78/15,668.71 = 6,879.10/x
  3. Step 3: Cross multiply
    11,356.78x = 15,668.71 × 6,879.10
  4. Step 4: Simplify right side
    11,356.78x = 107,786,622.96
  5. Step 5: Solve for x
    x = 107,786,622.96/11,356.78
  6. Step 6: Final answer
    x = 9,490.95

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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.