Home / 28,647.27-42,926.96-11,998.20

Finding the Fourth Proportional to 28,647.27, 42,926.96 and 11,998.20

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Solution

The fourth proportional to 28,647.27, 42,926.96 and 11,998.20 is: 17,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.27 : 42,926.96 = 11,998.20 : x
  2. Step 2: Convert to fraction form
    28,647.27/42,926.96 = 11,998.20/x
  3. Step 3: Cross multiply
    28,647.27x = 42,926.96 × 11,998.20
  4. Step 4: Simplify right side
    28,647.27x = 515,045,976.85
  5. Step 5: Solve for x
    x = 515,045,976.85/28,647.27
  6. Step 6: Final answer
    x = 17,978.88

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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.