Home / 18,765.20-28,147.77-7,525.61

Finding the Fourth Proportional to 18,765.20, 28,147.77 and 7,525.61

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Solution

The fourth proportional to 18,765.20, 28,147.77 and 7,525.61 is: 11,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.20 : 28,147.77 = 7,525.61 : x
  2. Step 2: Convert to fraction form
    18,765.20/28,147.77 = 7,525.61/x
  3. Step 3: Cross multiply
    18,765.20x = 28,147.77 × 7,525.61
  4. Step 4: Simplify right side
    18,765.20x = 211,828,998.65
  5. Step 5: Solve for x
    x = 211,828,998.65/18,765.20
  6. Step 6: Final answer
    x = 11,288.40

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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.