Home / 21,268.89-31,920.35-9,583.02

Finding the Fourth Proportional to 21,268.89, 31,920.35 and 9,583.02

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Solution

The fourth proportional to 21,268.89, 31,920.35 and 9,583.02 is: 14,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.89 : 31,920.35 = 9,583.02 : x
  2. Step 2: Convert to fraction form
    21,268.89/31,920.35 = 9,583.02/x
  3. Step 3: Cross multiply
    21,268.89x = 31,920.35 × 9,583.02
  4. Step 4: Simplify right side
    21,268.89x = 305,893,304.54
  5. Step 5: Solve for x
    x = 305,893,304.54/21,268.89
  6. Step 6: Final answer
    x = 14,382.19

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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.