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Finding the Fourth Proportional to 28,858.06, 43,270.89 and 10,132.89

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Solution

The fourth proportional to 28,858.06, 43,270.89 and 10,132.89 is: 15,193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.06 : 43,270.89 = 10,132.89 : x
  2. Step 2: Convert to fraction form
    28,858.06/43,270.89 = 10,132.89/x
  3. Step 3: Cross multiply
    28,858.06x = 43,270.89 × 10,132.89
  4. Step 4: Simplify right side
    28,858.06x = 438,459,168.57
  5. Step 5: Solve for x
    x = 438,459,168.57/28,858.06
  6. Step 6: Final answer
    x = 15,193.65

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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.