Home / 13,098.62-19,680.75-12,311.30

Finding the Fourth Proportional to 13,098.62, 19,680.75 and 12,311.30

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Solution

The fourth proportional to 13,098.62, 19,680.75 and 12,311.30 is: 18,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.62 : 19,680.75 = 12,311.30 : x
  2. Step 2: Convert to fraction form
    13,098.62/19,680.75 = 12,311.30/x
  3. Step 3: Cross multiply
    13,098.62x = 19,680.75 × 12,311.30
  4. Step 4: Simplify right side
    13,098.62x = 242,295,666.68
  5. Step 5: Solve for x
    x = 242,295,666.68/13,098.62
  6. Step 6: Final answer
    x = 18,497.80

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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.