Home / 31,729.90-43,786.04-18,303.55

Finding the Fourth Proportional to 31,729.90, 43,786.04 and 18,303.55

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Solution

The fourth proportional to 31,729.90, 43,786.04 and 18,303.55 is: 25,258.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.90 : 43,786.04 = 18,303.55 : x
  2. Step 2: Convert to fraction form
    31,729.90/43,786.04 = 18,303.55/x
  3. Step 3: Cross multiply
    31,729.90x = 43,786.04 × 18,303.55
  4. Step 4: Simplify right side
    31,729.90x = 801,439,972.44
  5. Step 5: Solve for x
    x = 801,439,972.44/31,729.90
  6. Step 6: Final answer
    x = 25,258.19

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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.