Home / 20,137.36-27,788.16-11,184.64

Finding the Fourth Proportional to 20,137.36, 27,788.16 and 11,184.64

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Solution

The fourth proportional to 20,137.36, 27,788.16 and 11,184.64 is: 15,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.36 : 27,788.16 = 11,184.64 : x
  2. Step 2: Convert to fraction form
    20,137.36/27,788.16 = 11,184.64/x
  3. Step 3: Cross multiply
    20,137.36x = 27,788.16 × 11,184.64
  4. Step 4: Simplify right side
    20,137.36x = 310,800,565.86
  5. Step 5: Solve for x
    x = 310,800,565.86/20,137.36
  6. Step 6: Final answer
    x = 15,434.03

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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.