Home / 28,004.12-42,013.70-11,375.72

Finding the Fourth Proportional to 28,004.12, 42,013.70 and 11,375.72

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Solution

The fourth proportional to 28,004.12, 42,013.70 and 11,375.72 is: 17,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.12 : 42,013.70 = 11,375.72 : x
  2. Step 2: Convert to fraction form
    28,004.12/42,013.70 = 11,375.72/x
  3. Step 3: Cross multiply
    28,004.12x = 42,013.70 × 11,375.72
  4. Step 4: Simplify right side
    28,004.12x = 477,936,087.36
  5. Step 5: Solve for x
    x = 477,936,087.36/28,004.12
  6. Step 6: Final answer
    x = 17,066.63

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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.