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Finding the Fourth Proportional to 28,826.82, 39,781.02 and 16,251.54

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Solution

The fourth proportional to 28,826.82, 39,781.02 and 16,251.54 is: 22,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,826.82 : 39,781.02 = 16,251.54 : x
  2. Step 2: Convert to fraction form
    28,826.82/39,781.02 = 16,251.54/x
  3. Step 3: Cross multiply
    28,826.82x = 39,781.02 × 16,251.54
  4. Step 4: Simplify right side
    28,826.82x = 646,502,837.77
  5. Step 5: Solve for x
    x = 646,502,837.77/28,826.82
  6. Step 6: Final answer
    x = 22,427.13

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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.