Home / 18,989.89-26,213.04-11,436.54

Finding the Fourth Proportional to 18,989.89, 26,213.04 and 11,436.54

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Solution

The fourth proportional to 18,989.89, 26,213.04 and 11,436.54 is: 15,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.89 : 26,213.04 = 11,436.54 : x
  2. Step 2: Convert to fraction form
    18,989.89/26,213.04 = 11,436.54/x
  3. Step 3: Cross multiply
    18,989.89x = 26,213.04 × 11,436.54
  4. Step 4: Simplify right side
    18,989.89x = 299,786,561.80
  5. Step 5: Solve for x
    x = 299,786,561.80/18,989.89
  6. Step 6: Final answer
    x = 15,786.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.