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Finding the Fourth Proportional to 28,954, 39,956.52 and 16,378.48

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Solution

The fourth proportional to 28,954, 39,956.52 and 16,378.48 is: 22,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954 : 39,956.52 = 16,378.48 : x
  2. Step 2: Convert to fraction form
    28,954/39,956.52 = 16,378.48/x
  3. Step 3: Cross multiply
    28,954x = 39,956.52 × 16,378.48
  4. Step 4: Simplify right side
    28,954x = 654,427,063.69
  5. Step 5: Solve for x
    x = 654,427,063.69/28,954
  6. Step 6: Final answer
    x = 22,602.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.