Home / 13,955.68-20,930.28-5,194.72

Finding the Fourth Proportional to 13,955.68, 20,930.28 and 5,194.72

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Solution

The fourth proportional to 13,955.68, 20,930.28 and 5,194.72 is: 7,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.68 : 20,930.28 = 5,194.72 : x
  2. Step 2: Convert to fraction form
    13,955.68/20,930.28 = 5,194.72/x
  3. Step 3: Cross multiply
    13,955.68x = 20,930.28 × 5,194.72
  4. Step 4: Simplify right side
    13,955.68x = 108,726,944.12
  5. Step 5: Solve for x
    x = 108,726,944.12/13,955.68
  6. Step 6: Final answer
    x = 7,790.87

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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.