Home / 14,635.89-20,197.38-7,921.38

Finding the Fourth Proportional to 14,635.89, 20,197.38 and 7,921.38

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Solution

The fourth proportional to 14,635.89, 20,197.38 and 7,921.38 is: 10,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,635.89 : 20,197.38 = 7,921.38 : x
  2. Step 2: Convert to fraction form
    14,635.89/20,197.38 = 7,921.38/x
  3. Step 3: Cross multiply
    14,635.89x = 20,197.38 × 7,921.38
  4. Step 4: Simplify right side
    14,635.89x = 159,991,121.98
  5. Step 5: Solve for x
    x = 159,991,121.98/14,635.89
  6. Step 6: Final answer
    x = 10,931.42

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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.