Home / 13,453.76-18,563.28-8,148.80

Finding the Fourth Proportional to 13,453.76, 18,563.28 and 8,148.80

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Solution

The fourth proportional to 13,453.76, 18,563.28 and 8,148.80 is: 11,243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.76 : 18,563.28 = 8,148.80 : x
  2. Step 2: Convert to fraction form
    13,453.76/18,563.28 = 8,148.80/x
  3. Step 3: Cross multiply
    13,453.76x = 18,563.28 × 8,148.80
  4. Step 4: Simplify right side
    13,453.76x = 151,268,456.06
  5. Step 5: Solve for x
    x = 151,268,456.06/13,453.76
  6. Step 6: Final answer
    x = 11,243.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.