Home / 18,620.28-25,695.90-10,236.78

Finding the Fourth Proportional to 18,620.28, 25,695.90 and 10,236.78

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Solution

The fourth proportional to 18,620.28, 25,695.90 and 10,236.78 is: 14,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.28 : 25,695.90 = 10,236.78 : x
  2. Step 2: Convert to fraction form
    18,620.28/25,695.90 = 10,236.78/x
  3. Step 3: Cross multiply
    18,620.28x = 25,695.90 × 10,236.78
  4. Step 4: Simplify right side
    18,620.28x = 263,043,275.20
  5. Step 5: Solve for x
    x = 263,043,275.20/18,620.28
  6. Step 6: Final answer
    x = 14,126.71

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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.