Home / 31,621.44-43,632.96-18,871.68

Finding the Fourth Proportional to 31,621.44, 43,632.96 and 18,871.68

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Solution

The fourth proportional to 31,621.44, 43,632.96 and 18,871.68 is: 26,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.44 : 43,632.96 = 18,871.68 : x
  2. Step 2: Convert to fraction form
    31,621.44/43,632.96 = 18,871.68/x
  3. Step 3: Cross multiply
    31,621.44x = 43,632.96 × 18,871.68
  4. Step 4: Simplify right side
    31,621.44x = 823,427,258.57
  5. Step 5: Solve for x
    x = 823,427,258.57/31,621.44
  6. Step 6: Final answer
    x = 26,040.16

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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.