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Finding the Fourth Proportional to 18,354.69, 27,525.11 and 7,818.12

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Solution

The fourth proportional to 18,354.69, 27,525.11 and 7,818.12 is: 11,724.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.69 : 27,525.11 = 7,818.12 : x
  2. Step 2: Convert to fraction form
    18,354.69/27,525.11 = 7,818.12/x
  3. Step 3: Cross multiply
    18,354.69x = 27,525.11 × 7,818.12
  4. Step 4: Simplify right side
    18,354.69x = 215,194,573.90
  5. Step 5: Solve for x
    x = 215,194,573.90/18,354.69
  6. Step 6: Final answer
    x = 11,724.23

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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.