Home / 18,823.79-28,240.85-7,738.34

Finding the Fourth Proportional to 18,823.79, 28,240.85 and 7,738.34

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Solution

The fourth proportional to 18,823.79, 28,240.85 and 7,738.34 is: 11,609.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,823.79 : 28,240.85 = 7,738.34 : x
  2. Step 2: Convert to fraction form
    18,823.79/28,240.85 = 7,738.34/x
  3. Step 3: Cross multiply
    18,823.79x = 28,240.85 × 7,738.34
  4. Step 4: Simplify right side
    18,823.79x = 218,537,177.33
  5. Step 5: Solve for x
    x = 218,537,177.33/18,823.79
  6. Step 6: Final answer
    x = 11,609.63

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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.