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Finding the Fourth Proportional to 18,250.64, 25,185.84 and 9,867.12

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Solution

The fourth proportional to 18,250.64, 25,185.84 and 9,867.12 is: 13,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.64 : 25,185.84 = 9,867.12 : x
  2. Step 2: Convert to fraction form
    18,250.64/25,185.84 = 9,867.12/x
  3. Step 3: Cross multiply
    18,250.64x = 25,185.84 × 9,867.12
  4. Step 4: Simplify right side
    18,250.64x = 248,511,705.58
  5. Step 5: Solve for x
    x = 248,511,705.58/18,250.64
  6. Step 6: Final answer
    x = 13,616.60

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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.