Home / 27,431.88-41,077.54-18,986.68

Finding the Fourth Proportional to 27,431.88, 41,077.54 and 18,986.68

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Solution

The fourth proportional to 27,431.88, 41,077.54 and 18,986.68 is: 28,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,431.88 : 41,077.54 = 18,986.68 : x
  2. Step 2: Convert to fraction form
    27,431.88/41,077.54 = 18,986.68/x
  3. Step 3: Cross multiply
    27,431.88x = 41,077.54 × 18,986.68
  4. Step 4: Simplify right side
    27,431.88x = 779,926,107.17
  5. Step 5: Solve for x
    x = 779,926,107.17/27,431.88
  6. Step 6: Final answer
    x = 28,431.38

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1.5x scale

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.