Home / 21,268.58-31,908.03-6,477.77

Finding the Fourth Proportional to 21,268.58, 31,908.03 and 6,477.77

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Solution

The fourth proportional to 21,268.58, 31,908.03 and 6,477.77 is: 9,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.58 : 31,908.03 = 6,477.77 : x
  2. Step 2: Convert to fraction form
    21,268.58/31,908.03 = 6,477.77/x
  3. Step 3: Cross multiply
    21,268.58x = 31,908.03 × 6,477.77
  4. Step 4: Simplify right side
    21,268.58x = 206,692,934.97
  5. Step 5: Solve for x
    x = 206,692,934.97/21,268.58
  6. Step 6: Final answer
    x = 9,718.23

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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.