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Finding the Fourth Proportional to 18,038.96, 27,058.64 and 5,558.88

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Solution

The fourth proportional to 18,038.96, 27,058.64 and 5,558.88 is: 8,338.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,038.96 : 27,058.64 = 5,558.88 : x
  2. Step 2: Convert to fraction form
    18,038.96/27,058.64 = 5,558.88/x
  3. Step 3: Cross multiply
    18,038.96x = 27,058.64 × 5,558.88
  4. Step 4: Simplify right side
    18,038.96x = 150,415,704.93
  5. Step 5: Solve for x
    x = 150,415,704.93/18,038.96
  6. Step 6: Final answer
    x = 8,338.38

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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.