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Finding the Fourth Proportional to 14,855.70, 20,497.54 and 8,480.26

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Solution

The fourth proportional to 14,855.70, 20,497.54 and 8,480.26 is: 11,700.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.70 : 20,497.54 = 8,480.26 : x
  2. Step 2: Convert to fraction form
    14,855.70/20,497.54 = 8,480.26/x
  3. Step 3: Cross multiply
    14,855.70x = 20,497.54 × 8,480.26
  4. Step 4: Simplify right side
    14,855.70x = 173,824,468.56
  5. Step 5: Solve for x
    x = 173,824,468.56/14,855.70
  6. Step 6: Final answer
    x = 11,700.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.