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Finding the Fourth Proportional to 28,751.76, 43,093.08 and 15,603.60

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Solution

The fourth proportional to 28,751.76, 43,093.08 and 15,603.60 is: 23,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.76 : 43,093.08 = 15,603.60 : x
  2. Step 2: Convert to fraction form
    28,751.76/43,093.08 = 15,603.60/x
  3. Step 3: Cross multiply
    28,751.76x = 43,093.08 × 15,603.60
  4. Step 4: Simplify right side
    28,751.76x = 672,407,183.09
  5. Step 5: Solve for x
    x = 672,407,183.09/28,751.76
  6. Step 6: Final answer
    x = 23,386.64

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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.