Home / 27,760.89-38,310.27-15,185.64

Finding the Fourth Proportional to 27,760.89, 38,310.27 and 15,185.64

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Solution

The fourth proportional to 27,760.89, 38,310.27 and 15,185.64 is: 20,956.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,760.89 : 38,310.27 = 15,185.64 : x
  2. Step 2: Convert to fraction form
    27,760.89/38,310.27 = 15,185.64/x
  3. Step 3: Cross multiply
    27,760.89x = 38,310.27 × 15,185.64
  4. Step 4: Simplify right side
    27,760.89x = 581,765,968.52
  5. Step 5: Solve for x
    x = 581,765,968.52/27,760.89
  6. Step 6: Final answer
    x = 20,956.32

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1.5x scale

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.