Home / 18,771.04-28,152.96-7,081.12

Finding the Fourth Proportional to 18,771.04, 28,152.96 and 7,081.12

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Solution

The fourth proportional to 18,771.04, 28,152.96 and 7,081.12 is: 10,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.04 : 28,152.96 = 7,081.12 : x
  2. Step 2: Convert to fraction form
    18,771.04/28,152.96 = 7,081.12/x
  3. Step 3: Cross multiply
    18,771.04x = 28,152.96 × 7,081.12
  4. Step 4: Simplify right side
    18,771.04x = 199,354,488.12
  5. Step 5: Solve for x
    x = 199,354,488.12/18,771.04
  6. Step 6: Final answer
    x = 10,620.32

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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.