Home / 18,285.49-27,429.95-5,137.81

Finding the Fourth Proportional to 18,285.49, 27,429.95 and 5,137.81

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Solution

The fourth proportional to 18,285.49, 27,429.95 and 5,137.81 is: 7,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.49 : 27,429.95 = 5,137.81 : x
  2. Step 2: Convert to fraction form
    18,285.49/27,429.95 = 5,137.81/x
  3. Step 3: Cross multiply
    18,285.49x = 27,429.95 × 5,137.81
  4. Step 4: Simplify right side
    18,285.49x = 140,929,815.68
  5. Step 5: Solve for x
    x = 140,929,815.68/18,285.49
  6. Step 6: Final answer
    x = 7,707.19

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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.