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Finding the Fourth Proportional to 28,804.46, 39,755.31 and 16,867.10

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Solution

The fourth proportional to 28,804.46, 39,755.31 and 16,867.10 is: 23,279.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,804.46 : 39,755.31 = 16,867.10 : x
  2. Step 2: Convert to fraction form
    28,804.46/39,755.31 = 16,867.10/x
  3. Step 3: Cross multiply
    28,804.46x = 39,755.31 × 16,867.10
  4. Step 4: Simplify right side
    28,804.46x = 670,556,789.30
  5. Step 5: Solve for x
    x = 670,556,789.30/28,804.46
  6. Step 6: Final answer
    x = 23,279.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.