Home / 27,939.64-38,540.34-18,003.64

Finding the Fourth Proportional to 27,939.64, 38,540.34 and 18,003.64

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Solution

The fourth proportional to 27,939.64, 38,540.34 and 18,003.64 is: 24,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,939.64 : 38,540.34 = 18,003.64 : x
  2. Step 2: Convert to fraction form
    27,939.64/38,540.34 = 18,003.64/x
  3. Step 3: Cross multiply
    27,939.64x = 38,540.34 × 18,003.64
  4. Step 4: Simplify right side
    27,939.64x = 693,866,406.84
  5. Step 5: Solve for x
    x = 693,866,406.84/27,939.64
  6. Step 6: Final answer
    x = 24,834.48

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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.