Home / 11,391.36-15,719.36-6,356.32

Finding the Fourth Proportional to 11,391.36, 15,719.36 and 6,356.32

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Solution

The fourth proportional to 11,391.36, 15,719.36 and 6,356.32 is: 8,771.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.36 : 15,719.36 = 6,356.32 : x
  2. Step 2: Convert to fraction form
    11,391.36/15,719.36 = 6,356.32/x
  3. Step 3: Cross multiply
    11,391.36x = 15,719.36 × 6,356.32
  4. Step 4: Simplify right side
    11,391.36x = 99,917,282.36
  5. Step 5: Solve for x
    x = 99,917,282.36/11,391.36
  6. Step 6: Final answer
    x = 8,771.32

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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.