Home / 28,442.70-39,250.66-15,696

Finding the Fourth Proportional to 28,442.70, 39,250.66 and 15,696

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Solution

The fourth proportional to 28,442.70, 39,250.66 and 15,696 is: 21,660.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.70 : 39,250.66 = 15,696 : x
  2. Step 2: Convert to fraction form
    28,442.70/39,250.66 = 15,696/x
  3. Step 3: Cross multiply
    28,442.70x = 39,250.66 × 15,696
  4. Step 4: Simplify right side
    28,442.70x = 616,078,359.36
  5. Step 5: Solve for x
    x = 616,078,359.36/28,442.70
  6. Step 6: Final answer
    x = 21,660.33

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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.