Home / 18,621.54-27,916.59-8,083.61

Finding the Fourth Proportional to 18,621.54, 27,916.59 and 8,083.61

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Solution

The fourth proportional to 18,621.54, 27,916.59 and 8,083.61 is: 12,118.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.54 : 27,916.59 = 8,083.61 : x
  2. Step 2: Convert to fraction form
    18,621.54/27,916.59 = 8,083.61/x
  3. Step 3: Cross multiply
    18,621.54x = 27,916.59 × 8,083.61
  4. Step 4: Simplify right side
    18,621.54x = 225,666,821.51
  5. Step 5: Solve for x
    x = 225,666,821.51/18,621.54
  6. Step 6: Final answer
    x = 12,118.59

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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.