Home / 13,187.71-19,780.85-3,326.41

Finding the Fourth Proportional to 13,187.71, 19,780.85 and 3,326.41

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Solution

The fourth proportional to 13,187.71, 19,780.85 and 3,326.41 is: 4,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.71 : 19,780.85 = 3,326.41 : x
  2. Step 2: Convert to fraction form
    13,187.71/19,780.85 = 3,326.41/x
  3. Step 3: Cross multiply
    13,187.71x = 19,780.85 × 3,326.41
  4. Step 4: Simplify right side
    13,187.71x = 65,799,217.25
  5. Step 5: Solve for x
    x = 65,799,217.25/13,187.71
  6. Step 6: Final answer
    x = 4,989.44

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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.