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Finding the Fourth Proportional to 18,188.64, 25,100.73 and 11,118.96

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Solution

The fourth proportional to 18,188.64, 25,100.73 and 11,118.96 is: 15,344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.64 : 25,100.73 = 11,118.96 : x
  2. Step 2: Convert to fraction form
    18,188.64/25,100.73 = 11,118.96/x
  3. Step 3: Cross multiply
    18,188.64x = 25,100.73 × 11,118.96
  4. Step 4: Simplify right side
    18,188.64x = 279,094,012.84
  5. Step 5: Solve for x
    x = 279,094,012.84/18,188.64
  6. Step 6: Final answer
    x = 15,344.41

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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.