Home / 20,838.83-31,268.48-9,743.90

Finding the Fourth Proportional to 20,838.83, 31,268.48 and 9,743.90

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Solution

The fourth proportional to 20,838.83, 31,268.48 and 9,743.90 is: 14,620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.83 : 31,268.48 = 9,743.90 : x
  2. Step 2: Convert to fraction form
    20,838.83/31,268.48 = 9,743.90/x
  3. Step 3: Cross multiply
    20,838.83x = 31,268.48 × 9,743.90
  4. Step 4: Simplify right side
    20,838.83x = 304,676,737.21
  5. Step 5: Solve for x
    x = 304,676,737.21/20,838.83
  6. Step 6: Final answer
    x = 14,620.63

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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.