Home / 21,268.32-31,903.79-6,478.32

Finding the Fourth Proportional to 21,268.32, 31,903.79 and 6,478.32

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Solution

The fourth proportional to 21,268.32, 31,903.79 and 6,478.32 is: 9,717.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.32 : 31,903.79 = 6,478.32 : x
  2. Step 2: Convert to fraction form
    21,268.32/31,903.79 = 6,478.32/x
  3. Step 3: Cross multiply
    21,268.32x = 31,903.79 × 6,478.32
  4. Step 4: Simplify right side
    21,268.32x = 206,682,928.44
  5. Step 5: Solve for x
    x = 206,682,928.44/21,268.32
  6. Step 6: Final answer
    x = 9,717.88

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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.