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Finding the Fourth Proportional to 19,690.54, 29,519.20 and 8,589.08

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Solution

The fourth proportional to 19,690.54, 29,519.20 and 8,589.08 is: 12,876.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.54 : 29,519.20 = 8,589.08 : x
  2. Step 2: Convert to fraction form
    19,690.54/29,519.20 = 8,589.08/x
  3. Step 3: Cross multiply
    19,690.54x = 29,519.20 × 8,589.08
  4. Step 4: Simplify right side
    19,690.54x = 253,542,770.34
  5. Step 5: Solve for x
    x = 253,542,770.34/19,690.54
  6. Step 6: Final answer
    x = 12,876.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.