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Finding the Fourth Proportional to 18,615.56, 27,923.33 and 5,477.15

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Solution

The fourth proportional to 18,615.56, 27,923.33 and 5,477.15 is: 8,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.56 : 27,923.33 = 5,477.15 : x
  2. Step 2: Convert to fraction form
    18,615.56/27,923.33 = 5,477.15/x
  3. Step 3: Cross multiply
    18,615.56x = 27,923.33 × 5,477.15
  4. Step 4: Simplify right side
    18,615.56x = 152,940,239.52
  5. Step 5: Solve for x
    x = 152,940,239.52/18,615.56
  6. Step 6: Final answer
    x = 8,215.72

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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.