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Finding the Fourth Proportional to 28,010.40, 41,929.20 and 16,288.80

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Solution

The fourth proportional to 28,010.40, 41,929.20 and 16,288.80 is: 24,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.40 : 41,929.20 = 16,288.80 : x
  2. Step 2: Convert to fraction form
    28,010.40/41,929.20 = 16,288.80/x
  3. Step 3: Cross multiply
    28,010.40x = 41,929.20 × 16,288.80
  4. Step 4: Simplify right side
    28,010.40x = 682,976,352.96
  5. Step 5: Solve for x
    x = 682,976,352.96/28,010.40
  6. Step 6: Final answer
    x = 24,382.96

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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.