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Finding the Fourth Proportional to 18,992.10, 28,489.53 and 6,512.01

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Solution

The fourth proportional to 18,992.10, 28,489.53 and 6,512.01 is: 9,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.10 : 28,489.53 = 6,512.01 : x
  2. Step 2: Convert to fraction form
    18,992.10/28,489.53 = 6,512.01/x
  3. Step 3: Cross multiply
    18,992.10x = 28,489.53 × 6,512.01
  4. Step 4: Simplify right side
    18,992.10x = 185,524,104.26
  5. Step 5: Solve for x
    x = 185,524,104.26/18,992.10
  6. Step 6: Final answer
    x = 9,768.49

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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.