Home / 31,639.32-43,661.64-19,696.68

Finding the Fourth Proportional to 31,639.32, 43,661.64 and 19,696.68

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Solution

The fourth proportional to 31,639.32, 43,661.64 and 19,696.68 is: 27,181.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.32 : 43,661.64 = 19,696.68 : x
  2. Step 2: Convert to fraction form
    31,639.32/43,661.64 = 19,696.68/x
  3. Step 3: Cross multiply
    31,639.32x = 43,661.64 × 19,696.68
  4. Step 4: Simplify right side
    31,639.32x = 859,989,351.36
  5. Step 5: Solve for x
    x = 859,989,351.36/31,639.32
  6. Step 6: Final answer
    x = 27,181.03

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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.