Home / 28,148.24-42,173.88-18,654.64

Finding the Fourth Proportional to 28,148.24, 42,173.88 and 18,654.64

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Solution

The fourth proportional to 28,148.24, 42,173.88 and 18,654.64 is: 27,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.24 : 42,173.88 = 18,654.64 : x
  2. Step 2: Convert to fraction form
    28,148.24/42,173.88 = 18,654.64/x
  3. Step 3: Cross multiply
    28,148.24x = 42,173.88 × 18,654.64
  4. Step 4: Simplify right side
    28,148.24x = 786,738,548.80
  5. Step 5: Solve for x
    x = 786,738,548.80/28,148.24
  6. Step 6: Final answer
    x = 27,949.83

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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.