Home / 13,819.47-20,711.87-5,912.70

Finding the Fourth Proportional to 13,819.47, 20,711.87 and 5,912.70

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Solution

The fourth proportional to 13,819.47, 20,711.87 and 5,912.70 is: 8,861.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.47 : 20,711.87 = 5,912.70 : x
  2. Step 2: Convert to fraction form
    13,819.47/20,711.87 = 5,912.70/x
  3. Step 3: Cross multiply
    13,819.47x = 20,711.87 × 5,912.70
  4. Step 4: Simplify right side
    13,819.47x = 122,463,044.19
  5. Step 5: Solve for x
    x = 122,463,044.19/13,819.47
  6. Step 6: Final answer
    x = 8,861.63

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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.