Home / 27,879.12-38,491.20-17,280

Finding the Fourth Proportional to 27,879.12, 38,491.20 and 17,280

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Solution

The fourth proportional to 27,879.12, 38,491.20 and 17,280 is: 23,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.12 : 38,491.20 = 17,280 : x
  2. Step 2: Convert to fraction form
    27,879.12/38,491.20 = 17,280/x
  3. Step 3: Cross multiply
    27,879.12x = 38,491.20 × 17,280
  4. Step 4: Simplify right side
    27,879.12x = 665,127,936
  5. Step 5: Solve for x
    x = 665,127,936/27,879.12
  6. Step 6: Final answer
    x = 23,857.57

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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.