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Finding the Fourth Proportional to 28,544.54, 42,806.16 and 9,819.28

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Solution

The fourth proportional to 28,544.54, 42,806.16 and 9,819.28 is: 14,725.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.54 : 42,806.16 = 9,819.28 : x
  2. Step 2: Convert to fraction form
    28,544.54/42,806.16 = 9,819.28/x
  3. Step 3: Cross multiply
    28,544.54x = 42,806.16 × 9,819.28
  4. Step 4: Simplify right side
    28,544.54x = 420,325,670.76
  5. Step 5: Solve for x
    x = 420,325,670.76/28,544.54
  6. Step 6: Final answer
    x = 14,725.26

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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.