Home / 11,421.55-17,099.50-8,439.94

Finding the Fourth Proportional to 11,421.55, 17,099.50 and 8,439.94

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Solution

The fourth proportional to 11,421.55, 17,099.50 and 8,439.94 is: 12,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.55 : 17,099.50 = 8,439.94 : x
  2. Step 2: Convert to fraction form
    11,421.55/17,099.50 = 8,439.94/x
  3. Step 3: Cross multiply
    11,421.55x = 17,099.50 × 8,439.94
  4. Step 4: Simplify right side
    11,421.55x = 144,318,754.03
  5. Step 5: Solve for x
    x = 144,318,754.03/11,421.55
  6. Step 6: Final answer
    x = 12,635.65

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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.