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Finding the Fourth Proportional to 18,539.70, 27,809.59 and 4,499.67

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Solution

The fourth proportional to 18,539.70, 27,809.59 and 4,499.67 is: 6,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.70 : 27,809.59 = 4,499.67 : x
  2. Step 2: Convert to fraction form
    18,539.70/27,809.59 = 4,499.67/x
  3. Step 3: Cross multiply
    18,539.70x = 27,809.59 × 4,499.67
  4. Step 4: Simplify right side
    18,539.70x = 125,133,977.84
  5. Step 5: Solve for x
    x = 125,133,977.84/18,539.70
  6. Step 6: Final answer
    x = 6,749.51

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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.