Home / 18,830.48-28,245.76-7,729.43

Finding the Fourth Proportional to 18,830.48, 28,245.76 and 7,729.43

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Solution

The fourth proportional to 18,830.48, 28,245.76 and 7,729.43 is: 11,594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.48 : 28,245.76 = 7,729.43 : x
  2. Step 2: Convert to fraction form
    18,830.48/28,245.76 = 7,729.43/x
  3. Step 3: Cross multiply
    18,830.48x = 28,245.76 × 7,729.43
  4. Step 4: Simplify right side
    18,830.48x = 218,323,676.01
  5. Step 5: Solve for x
    x = 218,323,676.01/18,830.48
  6. Step 6: Final answer
    x = 11,594.16

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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.