Home / 19,150.20-28,713.54-7,449.78

Finding the Fourth Proportional to 19,150.20, 28,713.54 and 7,449.78

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Solution

The fourth proportional to 19,150.20, 28,713.54 and 7,449.78 is: 11,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150.20 : 28,713.54 = 7,449.78 : x
  2. Step 2: Convert to fraction form
    19,150.20/28,713.54 = 7,449.78/x
  3. Step 3: Cross multiply
    19,150.20x = 28,713.54 × 7,449.78
  4. Step 4: Simplify right side
    19,150.20x = 213,909,556.02
  5. Step 5: Solve for x
    x = 213,909,556.02/19,150.20
  6. Step 6: Final answer
    x = 11,170.10

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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.