Home / 18,995.12-28,489.62-6,514.64

Finding the Fourth Proportional to 18,995.12, 28,489.62 and 6,514.64

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Solution

The fourth proportional to 18,995.12, 28,489.62 and 6,514.64 is: 9,770.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.12 : 28,489.62 = 6,514.64 : x
  2. Step 2: Convert to fraction form
    18,995.12/28,489.62 = 6,514.64/x
  3. Step 3: Cross multiply
    18,995.12x = 28,489.62 × 6,514.64
  4. Step 4: Simplify right side
    18,995.12x = 185,599,618.04
  5. Step 5: Solve for x
    x = 185,599,618.04/18,995.12
  6. Step 6: Final answer
    x = 9,770.91

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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.