Home / 18,727.07-28,066.37-7,620.75

Finding the Fourth Proportional to 18,727.07, 28,066.37 and 7,620.75

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Solution

The fourth proportional to 18,727.07, 28,066.37 and 7,620.75 is: 11,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.07 : 28,066.37 = 7,620.75 : x
  2. Step 2: Convert to fraction form
    18,727.07/28,066.37 = 7,620.75/x
  3. Step 3: Cross multiply
    18,727.07x = 28,066.37 × 7,620.75
  4. Step 4: Simplify right side
    18,727.07x = 213,886,751.07
  5. Step 5: Solve for x
    x = 213,886,751.07/18,727.07
  6. Step 6: Final answer
    x = 11,421.26

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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.