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Finding the Fourth Proportional to 28,551.92, 42,817.20 and 9,826.68

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Solution

The fourth proportional to 28,551.92, 42,817.20 and 9,826.68 is: 14,736.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.92 : 42,817.20 = 9,826.68 : x
  2. Step 2: Convert to fraction form
    28,551.92/42,817.20 = 9,826.68/x
  3. Step 3: Cross multiply
    28,551.92x = 42,817.20 × 9,826.68
  4. Step 4: Simplify right side
    28,551.92x = 420,750,922.90
  5. Step 5: Solve for x
    x = 420,750,922.90/28,551.92
  6. Step 6: Final answer
    x = 14,736.34

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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.