Home / 18,842.40-28,231.20-15,537.60

Finding the Fourth Proportional to 18,842.40, 28,231.20 and 15,537.60

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Solution

The fourth proportional to 18,842.40, 28,231.20 and 15,537.60 is: 23,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.40 : 28,231.20 = 15,537.60 : x
  2. Step 2: Convert to fraction form
    18,842.40/28,231.20 = 15,537.60/x
  3. Step 3: Cross multiply
    18,842.40x = 28,231.20 × 15,537.60
  4. Step 4: Simplify right side
    18,842.40x = 438,645,093.12
  5. Step 5: Solve for x
    x = 438,645,093.12/18,842.40
  6. Step 6: Final answer
    x = 23,279.68

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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.