Home / 28,286.86-42,448.19-15,815.07

Finding the Fourth Proportional to 28,286.86, 42,448.19 and 15,815.07

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Solution

The fourth proportional to 28,286.86, 42,448.19 and 15,815.07 is: 23,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.86 : 42,448.19 = 15,815.07 : x
  2. Step 2: Convert to fraction form
    28,286.86/42,448.19 = 15,815.07/x
  3. Step 3: Cross multiply
    28,286.86x = 42,448.19 × 15,815.07
  4. Step 4: Simplify right side
    28,286.86x = 671,321,096.22
  5. Step 5: Solve for x
    x = 671,321,096.22/28,286.86
  6. Step 6: Final answer
    x = 23,732.61

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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.