Home / 12,540.48-18,811.98-4,645.12

Finding the Fourth Proportional to 12,540.48, 18,811.98 and 4,645.12

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Solution

The fourth proportional to 12,540.48, 18,811.98 and 4,645.12 is: 6,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.48 : 18,811.98 = 4,645.12 : x
  2. Step 2: Convert to fraction form
    12,540.48/18,811.98 = 4,645.12/x
  3. Step 3: Cross multiply
    12,540.48x = 18,811.98 × 4,645.12
  4. Step 4: Simplify right side
    12,540.48x = 87,383,904.54
  5. Step 5: Solve for x
    x = 87,383,904.54/12,540.48
  6. Step 6: Final answer
    x = 6,968.15

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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.