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Finding the Fourth Proportional to 18,420.57, 27,633.59 and 6,573.42

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Solution

The fourth proportional to 18,420.57, 27,633.59 and 6,573.42 is: 9,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.57 : 27,633.59 = 6,573.42 : x
  2. Step 2: Convert to fraction form
    18,420.57/27,633.59 = 6,573.42/x
  3. Step 3: Cross multiply
    18,420.57x = 27,633.59 × 6,573.42
  4. Step 4: Simplify right side
    18,420.57x = 181,647,193.18
  5. Step 5: Solve for x
    x = 181,647,193.18/18,420.57
  6. Step 6: Final answer
    x = 9,861.11

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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.