Home / 18,256.20-25,187.40-11,879.88

Finding the Fourth Proportional to 18,256.20, 25,187.40 and 11,879.88

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Solution

The fourth proportional to 18,256.20, 25,187.40 and 11,879.88 is: 16,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,256.20 : 25,187.40 = 11,879.88 : x
  2. Step 2: Convert to fraction form
    18,256.20/25,187.40 = 11,879.88/x
  3. Step 3: Cross multiply
    18,256.20x = 25,187.40 × 11,879.88
  4. Step 4: Simplify right side
    18,256.20x = 299,223,289.51
  5. Step 5: Solve for x
    x = 299,223,289.51/18,256.20
  6. Step 6: Final answer
    x = 16,390.23

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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.