Home / 27,617.64-38,100.21-18,661.88

Finding the Fourth Proportional to 27,617.64, 38,100.21 and 18,661.88

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Solution

The fourth proportional to 27,617.64, 38,100.21 and 18,661.88 is: 25,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,617.64 : 38,100.21 = 18,661.88 : x
  2. Step 2: Convert to fraction form
    27,617.64/38,100.21 = 18,661.88/x
  3. Step 3: Cross multiply
    27,617.64x = 38,100.21 × 18,661.88
  4. Step 4: Simplify right side
    27,617.64x = 711,021,546.99
  5. Step 5: Solve for x
    x = 711,021,546.99/27,617.64
  6. Step 6: Final answer
    x = 25,745.20

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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.