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Finding the Fourth Proportional to 18,064.64, 27,078.36 and 10,256.96

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Solution

The fourth proportional to 18,064.64, 27,078.36 and 10,256.96 is: 15,374.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,064.64 : 27,078.36 = 10,256.96 : x
  2. Step 2: Convert to fraction form
    18,064.64/27,078.36 = 10,256.96/x
  3. Step 3: Cross multiply
    18,064.64x = 27,078.36 × 10,256.96
  4. Step 4: Simplify right side
    18,064.64x = 277,741,655.39
  5. Step 5: Solve for x
    x = 277,741,655.39/18,064.64
  6. Step 6: Final answer
    x = 15,374.88

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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.