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Finding the Fourth Proportional to 28,996.89, 43,512.06 and 15,669.92

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Solution

The fourth proportional to 28,996.89, 43,512.06 and 15,669.92 is: 23,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.89 : 43,512.06 = 15,669.92 : x
  2. Step 2: Convert to fraction form
    28,996.89/43,512.06 = 15,669.92/x
  3. Step 3: Cross multiply
    28,996.89x = 43,512.06 × 15,669.92
  4. Step 4: Simplify right side
    28,996.89x = 681,830,281.67
  5. Step 5: Solve for x
    x = 681,830,281.67/28,996.89
  6. Step 6: Final answer
    x = 23,513.91

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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.