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Finding the Fourth Proportional to 28,443.69, 42,672.83 and 10,914.89

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Solution

The fourth proportional to 28,443.69, 42,672.83 and 10,914.89 is: 16,375.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.69 : 42,672.83 = 10,914.89 : x
  2. Step 2: Convert to fraction form
    28,443.69/42,672.83 = 10,914.89/x
  3. Step 3: Cross multiply
    28,443.69x = 42,672.83 × 10,914.89
  4. Step 4: Simplify right side
    28,443.69x = 465,768,977.50
  5. Step 5: Solve for x
    x = 465,768,977.50/28,443.69
  6. Step 6: Final answer
    x = 16,375.12

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1.5x scale

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.