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Finding the Fourth Proportional to 14,798.72, 20,422.84 and 8,511.09

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Solution

The fourth proportional to 14,798.72, 20,422.84 and 8,511.09 is: 11,745.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,798.72 : 20,422.84 = 8,511.09 : x
  2. Step 2: Convert to fraction form
    14,798.72/20,422.84 = 8,511.09/x
  3. Step 3: Cross multiply
    14,798.72x = 20,422.84 × 8,511.09
  4. Step 4: Simplify right side
    14,798.72x = 173,820,629.30
  5. Step 5: Solve for x
    x = 173,820,629.30/14,798.72
  6. Step 6: Final answer
    x = 11,745.65

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1.5x scale

Why These Related Problems?

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