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Finding the Fourth Proportional to 14,844.08, 20,483.91 and 8,129.78

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Solution

The fourth proportional to 14,844.08, 20,483.91 and 8,129.78 is: 11,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,844.08 : 20,483.91 = 8,129.78 : x
  2. Step 2: Convert to fraction form
    14,844.08/20,483.91 = 8,129.78/x
  3. Step 3: Cross multiply
    14,844.08x = 20,483.91 × 8,129.78
  4. Step 4: Simplify right side
    14,844.08x = 166,529,579.42
  5. Step 5: Solve for x
    x = 166,529,579.42/14,844.08
  6. Step 6: Final answer
    x = 11,218.59

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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.