Home / 18,670.14-28,016.10-6,991.56

Finding the Fourth Proportional to 18,670.14, 28,016.10 and 6,991.56

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Solution

The fourth proportional to 18,670.14, 28,016.10 and 6,991.56 is: 10,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.14 : 28,016.10 = 6,991.56 : x
  2. Step 2: Convert to fraction form
    18,670.14/28,016.10 = 6,991.56/x
  3. Step 3: Cross multiply
    18,670.14x = 28,016.10 × 6,991.56
  4. Step 4: Simplify right side
    18,670.14x = 195,876,244.12
  5. Step 5: Solve for x
    x = 195,876,244.12/18,670.14
  6. Step 6: Final answer
    x = 10,491.42

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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.