Home / 27,990.72-42,010.56-11,359.80

Finding the Fourth Proportional to 27,990.72, 42,010.56 and 11,359.80

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Solution

The fourth proportional to 27,990.72, 42,010.56 and 11,359.80 is: 17,049.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.72 : 42,010.56 = 11,359.80 : x
  2. Step 2: Convert to fraction form
    27,990.72/42,010.56 = 11,359.80/x
  3. Step 3: Cross multiply
    27,990.72x = 42,010.56 × 11,359.80
  4. Step 4: Simplify right side
    27,990.72x = 477,231,559.49
  5. Step 5: Solve for x
    x = 477,231,559.49/27,990.72
  6. Step 6: Final answer
    x = 17,049.64

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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.