Home / 31,380.37-43,311.05-19,449.01

Finding the Fourth Proportional to 31,380.37, 43,311.05 and 19,449.01

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Solution

The fourth proportional to 31,380.37, 43,311.05 and 19,449.01 is: 26,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.37 : 43,311.05 = 19,449.01 : x
  2. Step 2: Convert to fraction form
    31,380.37/43,311.05 = 19,449.01/x
  3. Step 3: Cross multiply
    31,380.37x = 43,311.05 × 19,449.01
  4. Step 4: Simplify right side
    31,380.37x = 842,357,044.56
  5. Step 5: Solve for x
    x = 842,357,044.56/31,380.37
  6. Step 6: Final answer
    x = 26,843.44

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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.