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Finding the Fourth Proportional to 14,914.99, 20,581.89 and 8,199.32

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Solution

The fourth proportional to 14,914.99, 20,581.89 and 8,199.32 is: 11,314.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,914.99 : 20,581.89 = 8,199.32 : x
  2. Step 2: Convert to fraction form
    14,914.99/20,581.89 = 8,199.32/x
  3. Step 3: Cross multiply
    14,914.99x = 20,581.89 × 8,199.32
  4. Step 4: Simplify right side
    14,914.99x = 168,757,502.31
  5. Step 5: Solve for x
    x = 168,757,502.31/14,914.99
  6. Step 6: Final answer
    x = 11,314.62

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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.