Home / 13,912.14-20,861.61-8,070.54

Finding the Fourth Proportional to 13,912.14, 20,861.61 and 8,070.54

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Solution

The fourth proportional to 13,912.14, 20,861.61 and 8,070.54 is: 12,101.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.14 : 20,861.61 = 8,070.54 : x
  2. Step 2: Convert to fraction form
    13,912.14/20,861.61 = 8,070.54/x
  3. Step 3: Cross multiply
    13,912.14x = 20,861.61 × 8,070.54
  4. Step 4: Simplify right side
    13,912.14x = 168,364,457.97
  5. Step 5: Solve for x
    x = 168,364,457.97/13,912.14
  6. Step 6: Final answer
    x = 12,101.98

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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.