Home / 27,078.80-40,618.20-7,359.80

Finding the Fourth Proportional to 27,078.80, 40,618.20 and 7,359.80

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Solution

The fourth proportional to 27,078.80, 40,618.20 and 7,359.80 is: 11,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,078.80 : 40,618.20 = 7,359.80 : x
  2. Step 2: Convert to fraction form
    27,078.80/40,618.20 = 7,359.80/x
  3. Step 3: Cross multiply
    27,078.80x = 40,618.20 × 7,359.80
  4. Step 4: Simplify right side
    27,078.80x = 298,941,828.36
  5. Step 5: Solve for x
    x = 298,941,828.36/27,078.80
  6. Step 6: Final answer
    x = 11,039.70

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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.