Home / 31,800.16-43,871.08-18,361.88

Finding the Fourth Proportional to 31,800.16, 43,871.08 and 18,361.88

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Solution

The fourth proportional to 31,800.16, 43,871.08 and 18,361.88 is: 25,331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.16 : 43,871.08 = 18,361.88 : x
  2. Step 2: Convert to fraction form
    31,800.16/43,871.08 = 18,361.88/x
  3. Step 3: Cross multiply
    31,800.16x = 43,871.08 × 18,361.88
  4. Step 4: Simplify right side
    31,800.16x = 805,555,506.43
  5. Step 5: Solve for x
    x = 805,555,506.43/31,800.16
  6. Step 6: Final answer
    x = 25,331.81

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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.