Home / 31,729.20-43,807.68-28,361.22

Finding the Fourth Proportional to 31,729.20, 43,807.68 and 28,361.22

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Solution

The fourth proportional to 31,729.20, 43,807.68 and 28,361.22 is: 39,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.20 : 43,807.68 = 28,361.22 : x
  2. Step 2: Convert to fraction form
    31,729.20/43,807.68 = 28,361.22/x
  3. Step 3: Cross multiply
    31,729.20x = 43,807.68 × 28,361.22
  4. Step 4: Simplify right side
    31,729.20x = 1,242,439,250.17
  5. Step 5: Solve for x
    x = 1,242,439,250.17/31,729.20
  6. Step 6: Final answer
    x = 39,157.60

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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.