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Finding the Fourth Proportional to 22,179.92, 30,607.81 and 12,108.65

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Solution

The fourth proportional to 22,179.92, 30,607.81 and 12,108.65 is: 16,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,179.92 : 30,607.81 = 12,108.65 : x
  2. Step 2: Convert to fraction form
    22,179.92/30,607.81 = 12,108.65/x
  3. Step 3: Cross multiply
    22,179.92x = 30,607.81 × 12,108.65
  4. Step 4: Simplify right side
    22,179.92x = 370,619,075.25
  5. Step 5: Solve for x
    x = 370,619,075.25/22,179.92
  6. Step 6: Final answer
    x = 16,709.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.