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Finding the Fourth Proportional to 19,646.85, 29,469.54 and 8,553.56

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Solution

The fourth proportional to 19,646.85, 29,469.54 and 8,553.56 is: 12,830.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,646.85 : 29,469.54 = 8,553.56 : x
  2. Step 2: Convert to fraction form
    19,646.85/29,469.54 = 8,553.56/x
  3. Step 3: Cross multiply
    19,646.85x = 29,469.54 × 8,553.56
  4. Step 4: Simplify right side
    19,646.85x = 252,069,331.21
  5. Step 5: Solve for x
    x = 252,069,331.21/19,646.85
  6. Step 6: Final answer
    x = 12,830.01

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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.