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Finding the Fourth Proportional to 12,484.56, 18,727.92 and 5,089.54

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Solution

The fourth proportional to 12,484.56, 18,727.92 and 5,089.54 is: 7,634.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.56 : 18,727.92 = 5,089.54 : x
  2. Step 2: Convert to fraction form
    12,484.56/18,727.92 = 5,089.54/x
  3. Step 3: Cross multiply
    12,484.56x = 18,727.92 × 5,089.54
  4. Step 4: Simplify right side
    12,484.56x = 95,316,497.96
  5. Step 5: Solve for x
    x = 95,316,497.96/12,484.56
  6. Step 6: Final answer
    x = 7,634.75

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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.