Home / 18,879.08-28,279.74-11,069.06

Finding the Fourth Proportional to 18,879.08, 28,279.74 and 11,069.06

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Solution

The fourth proportional to 18,879.08, 28,279.74 and 11,069.06 is: 16,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.08 : 28,279.74 = 11,069.06 : x
  2. Step 2: Convert to fraction form
    18,879.08/28,279.74 = 11,069.06/x
  3. Step 3: Cross multiply
    18,879.08x = 28,279.74 × 11,069.06
  4. Step 4: Simplify right side
    18,879.08x = 313,030,209.54
  5. Step 5: Solve for x
    x = 313,030,209.54/18,879.08
  6. Step 6: Final answer
    x = 16,580.80

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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.