Home / 13,219.28-18,246.02-8,180.52

Finding the Fourth Proportional to 13,219.28, 18,246.02 and 8,180.52

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Solution

The fourth proportional to 13,219.28, 18,246.02 and 8,180.52 is: 11,291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.28 : 18,246.02 = 8,180.52 : x
  2. Step 2: Convert to fraction form
    13,219.28/18,246.02 = 8,180.52/x
  3. Step 3: Cross multiply
    13,219.28x = 18,246.02 × 8,180.52
  4. Step 4: Simplify right side
    13,219.28x = 149,261,879.27
  5. Step 5: Solve for x
    x = 149,261,879.27/13,219.28
  6. Step 6: Final answer
    x = 11,291.23

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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.