Home / 31,660.77-43,698.78-20,173.35

Finding the Fourth Proportional to 31,660.77, 43,698.78 and 20,173.35

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Solution

The fourth proportional to 31,660.77, 43,698.78 and 20,173.35 is: 27,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.77 : 43,698.78 = 20,173.35 : x
  2. Step 2: Convert to fraction form
    31,660.77/43,698.78 = 20,173.35/x
  3. Step 3: Cross multiply
    31,660.77x = 43,698.78 × 20,173.35
  4. Step 4: Simplify right side
    31,660.77x = 881,550,783.51
  5. Step 5: Solve for x
    x = 881,550,783.51/31,660.77
  6. Step 6: Final answer
    x = 27,843.63

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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.