Home / 18,855.23-28,271.99-7,769.57

Finding the Fourth Proportional to 18,855.23, 28,271.99 and 7,769.57

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Solution

The fourth proportional to 18,855.23, 28,271.99 and 7,769.57 is: 11,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.23 : 28,271.99 = 7,769.57 : x
  2. Step 2: Convert to fraction form
    18,855.23/28,271.99 = 7,769.57/x
  3. Step 3: Cross multiply
    18,855.23x = 28,271.99 × 7,769.57
  4. Step 4: Simplify right side
    18,855.23x = 219,661,025.14
  5. Step 5: Solve for x
    x = 219,661,025.14/18,855.23
  6. Step 6: Final answer
    x = 11,649.88

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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.