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Finding the Fourth Proportional to 18,609.42, 27,919.56 and 7,510.44

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Solution

The fourth proportional to 18,609.42, 27,919.56 and 7,510.44 is: 11,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.42 : 27,919.56 = 7,510.44 : x
  2. Step 2: Convert to fraction form
    18,609.42/27,919.56 = 7,510.44/x
  3. Step 3: Cross multiply
    18,609.42x = 27,919.56 × 7,510.44
  4. Step 4: Simplify right side
    18,609.42x = 209,688,180.21
  5. Step 5: Solve for x
    x = 209,688,180.21/18,609.42
  6. Step 6: Final answer
    x = 11,267.85

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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.