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Finding the Fourth Proportional to 18,539.68, 27,809.28 and 4,499.81

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Solution

The fourth proportional to 18,539.68, 27,809.28 and 4,499.81 is: 6,749.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.68 : 27,809.28 = 4,499.81 : x
  2. Step 2: Convert to fraction form
    18,539.68/27,809.28 = 4,499.81/x
  3. Step 3: Cross multiply
    18,539.68x = 27,809.28 × 4,499.81
  4. Step 4: Simplify right side
    18,539.68x = 125,136,545.76
  5. Step 5: Solve for x
    x = 125,136,545.76/18,539.68
  6. Step 6: Final answer
    x = 6,749.66

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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.