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Finding the Fourth Proportional to 18,359.88, 27,539.22 and 5,879.76

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Solution

The fourth proportional to 18,359.88, 27,539.22 and 5,879.76 is: 8,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.88 : 27,539.22 = 5,879.76 : x
  2. Step 2: Convert to fraction form
    18,359.88/27,539.22 = 5,879.76/x
  3. Step 3: Cross multiply
    18,359.88x = 27,539.22 × 5,879.76
  4. Step 4: Simplify right side
    18,359.88x = 161,924,004.19
  5. Step 5: Solve for x
    x = 161,924,004.19/18,359.88
  6. Step 6: Final answer
    x = 8,819.45

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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.