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Finding the Fourth Proportional to 18,365.44, 27,548.88 and 5,218.96

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Solution

The fourth proportional to 18,365.44, 27,548.88 and 5,218.96 is: 7,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.44 : 27,548.88 = 5,218.96 : x
  2. Step 2: Convert to fraction form
    18,365.44/27,548.88 = 5,218.96/x
  3. Step 3: Cross multiply
    18,365.44x = 27,548.88 × 5,218.96
  4. Step 4: Simplify right side
    18,365.44x = 143,776,502.76
  5. Step 5: Solve for x
    x = 143,776,502.76/18,365.44
  6. Step 6: Final answer
    x = 7,828.64

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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.