Home / 28,431.44-42,661.56-19,178

Finding the Fourth Proportional to 28,431.44, 42,661.56 and 19,178

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Solution

The fourth proportional to 28,431.44, 42,661.56 and 19,178 is: 28,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.44 : 42,661.56 = 19,178 : x
  2. Step 2: Convert to fraction form
    28,431.44/42,661.56 = 19,178/x
  3. Step 3: Cross multiply
    28,431.44x = 42,661.56 × 19,178
  4. Step 4: Simplify right side
    28,431.44x = 818,163,397.68
  5. Step 5: Solve for x
    x = 818,163,397.68/28,431.44
  6. Step 6: Final answer
    x = 28,776.71

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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.