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Finding the Fourth Proportional to 28,675.33, 43,005.69 and 8,955.88

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Solution

The fourth proportional to 28,675.33, 43,005.69 and 8,955.88 is: 13,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.33 : 43,005.69 = 8,955.88 : x
  2. Step 2: Convert to fraction form
    28,675.33/43,005.69 = 8,955.88/x
  3. Step 3: Cross multiply
    28,675.33x = 43,005.69 × 8,955.88
  4. Step 4: Simplify right side
    28,675.33x = 385,153,798.96
  5. Step 5: Solve for x
    x = 385,153,798.96/28,675.33
  6. Step 6: Final answer
    x = 13,431.54

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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.