Home / 18,880.56-28,324.26-7,781.07

Finding the Fourth Proportional to 18,880.56, 28,324.26 and 7,781.07

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Solution

The fourth proportional to 18,880.56, 28,324.26 and 7,781.07 is: 11,673.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.56 : 28,324.26 = 7,781.07 : x
  2. Step 2: Convert to fraction form
    18,880.56/28,324.26 = 7,781.07/x
  3. Step 3: Cross multiply
    18,880.56x = 28,324.26 × 7,781.07
  4. Step 4: Simplify right side
    18,880.56x = 220,393,049.76
  5. Step 5: Solve for x
    x = 220,393,049.76/18,880.56
  6. Step 6: Final answer
    x = 11,673.01

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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.