Home / 18,356.21-25,331.54-11,186.12

Finding the Fourth Proportional to 18,356.21, 25,331.54 and 11,186.12

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Solution

The fourth proportional to 18,356.21, 25,331.54 and 11,186.12 is: 15,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.21 : 25,331.54 = 11,186.12 : x
  2. Step 2: Convert to fraction form
    18,356.21/25,331.54 = 11,186.12/x
  3. Step 3: Cross multiply
    18,356.21x = 25,331.54 × 11,186.12
  4. Step 4: Simplify right side
    18,356.21x = 283,361,463.64
  5. Step 5: Solve for x
    x = 283,361,463.64/18,356.21
  6. Step 6: Final answer
    x = 15,436.82

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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.