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Finding the Fourth Proportional to 18,314.28, 27,442.44 and 13,918.32

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Solution

The fourth proportional to 18,314.28, 27,442.44 and 13,918.32 is: 20,855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.28 : 27,442.44 = 13,918.32 : x
  2. Step 2: Convert to fraction form
    18,314.28/27,442.44 = 13,918.32/x
  3. Step 3: Cross multiply
    18,314.28x = 27,442.44 × 13,918.32
  4. Step 4: Simplify right side
    18,314.28x = 381,952,661.50
  5. Step 5: Solve for x
    x = 381,952,661.50/18,314.28
  6. Step 6: Final answer
    x = 20,855.46

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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.