Home / 18,867.83-28,305.36-7,180.11

Finding the Fourth Proportional to 18,867.83, 28,305.36 and 7,180.11

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Solution

The fourth proportional to 18,867.83, 28,305.36 and 7,180.11 is: 10,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.83 : 28,305.36 = 7,180.11 : x
  2. Step 2: Convert to fraction form
    18,867.83/28,305.36 = 7,180.11/x
  3. Step 3: Cross multiply
    18,867.83x = 28,305.36 × 7,180.11
  4. Step 4: Simplify right side
    18,867.83x = 203,235,598.39
  5. Step 5: Solve for x
    x = 203,235,598.39/18,867.83
  6. Step 6: Final answer
    x = 10,771.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.