Home / 19,268.55-28,904.31-7,428.15

Finding the Fourth Proportional to 19,268.55, 28,904.31 and 7,428.15

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Solution

The fourth proportional to 19,268.55, 28,904.31 and 7,428.15 is: 11,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,268.55 : 28,904.31 = 7,428.15 : x
  2. Step 2: Convert to fraction form
    19,268.55/28,904.31 = 7,428.15/x
  3. Step 3: Cross multiply
    19,268.55x = 28,904.31 × 7,428.15
  4. Step 4: Simplify right side
    19,268.55x = 214,705,550.33
  5. Step 5: Solve for x
    x = 214,705,550.33/19,268.55
  6. Step 6: Final answer
    x = 11,142.80

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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.