Home / 13,257.02-18,284.32-8,218.42

Finding the Fourth Proportional to 13,257.02, 18,284.32 and 8,218.42

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Solution

The fourth proportional to 13,257.02, 18,284.32 and 8,218.42 is: 11,334.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.02 : 18,284.32 = 8,218.42 : x
  2. Step 2: Convert to fraction form
    13,257.02/18,284.32 = 8,218.42/x
  3. Step 3: Cross multiply
    13,257.02x = 18,284.32 × 8,218.42
  4. Step 4: Simplify right side
    13,257.02x = 150,268,221.17
  5. Step 5: Solve for x
    x = 150,268,221.17/13,257.02
  6. Step 6: Final answer
    x = 11,334.99

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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.