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Finding the Fourth Proportional to 14,119.12, 19,481.88 and 8,813.08

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Solution

The fourth proportional to 14,119.12, 19,481.88 and 8,813.08 is: 12,160.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.12 : 19,481.88 = 8,813.08 : x
  2. Step 2: Convert to fraction form
    14,119.12/19,481.88 = 8,813.08/x
  3. Step 3: Cross multiply
    14,119.12x = 19,481.88 × 8,813.08
  4. Step 4: Simplify right side
    14,119.12x = 171,695,366.99
  5. Step 5: Solve for x
    x = 171,695,366.99/14,119.12
  6. Step 6: Final answer
    x = 12,160.49

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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.