Home / 31,226.80-46,840.20-20,729.20

Finding the Fourth Proportional to 31,226.80, 46,840.20 and 20,729.20

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Solution

The fourth proportional to 31,226.80, 46,840.20 and 20,729.20 is: 31,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,226.80 : 46,840.20 = 20,729.20 : x
  2. Step 2: Convert to fraction form
    31,226.80/46,840.20 = 20,729.20/x
  3. Step 3: Cross multiply
    31,226.80x = 46,840.20 × 20,729.20
  4. Step 4: Simplify right side
    31,226.80x = 970,959,873.84
  5. Step 5: Solve for x
    x = 970,959,873.84/31,226.80
  6. Step 6: Final answer
    x = 31,093.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.