Home / 21,268.83-31,920.25-9,582.96

Finding the Fourth Proportional to 21,268.83, 31,920.25 and 9,582.96

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Solution

The fourth proportional to 21,268.83, 31,920.25 and 9,582.96 is: 14,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.83 : 31,920.25 = 9,582.96 : x
  2. Step 2: Convert to fraction form
    21,268.83/31,920.25 = 9,582.96/x
  3. Step 3: Cross multiply
    21,268.83x = 31,920.25 × 9,582.96
  4. Step 4: Simplify right side
    21,268.83x = 305,890,478.94
  5. Step 5: Solve for x
    x = 305,890,478.94/21,268.83
  6. Step 6: Final answer
    x = 14,382.10

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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.