Home / 21,268.24-31,907.14-6,478.34

Finding the Fourth Proportional to 21,268.24, 31,907.14 and 6,478.34

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Solution

The fourth proportional to 21,268.24, 31,907.14 and 6,478.34 is: 9,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.24 : 31,907.14 = 6,478.34 : x
  2. Step 2: Convert to fraction form
    21,268.24/31,907.14 = 6,478.34/x
  3. Step 3: Cross multiply
    21,268.24x = 31,907.14 × 6,478.34
  4. Step 4: Simplify right side
    21,268.24x = 206,705,301.35
  5. Step 5: Solve for x
    x = 206,705,301.35/21,268.24
  6. Step 6: Final answer
    x = 9,718.97

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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.