Home / 27,817.27-38,385.72-15,878.99

Finding the Fourth Proportional to 27,817.27, 38,385.72 and 15,878.99

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Solution

The fourth proportional to 27,817.27, 38,385.72 and 15,878.99 is: 21,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,817.27 : 38,385.72 = 15,878.99 : x
  2. Step 2: Convert to fraction form
    27,817.27/38,385.72 = 15,878.99/x
  3. Step 3: Cross multiply
    27,817.27x = 38,385.72 × 15,878.99
  4. Step 4: Simplify right side
    27,817.27x = 609,526,388.73
  5. Step 5: Solve for x
    x = 609,526,388.73/27,817.27
  6. Step 6: Final answer
    x = 21,911.80

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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.