Home / 26,857.28-40,286.72-12,818.80

Finding the Fourth Proportional to 26,857.28, 40,286.72 and 12,818.80

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Solution

The fourth proportional to 26,857.28, 40,286.72 and 12,818.80 is: 19,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,857.28 : 40,286.72 = 12,818.80 : x
  2. Step 2: Convert to fraction form
    26,857.28/40,286.72 = 12,818.80/x
  3. Step 3: Cross multiply
    26,857.28x = 40,286.72 × 12,818.80
  4. Step 4: Simplify right side
    26,857.28x = 516,427,406.34
  5. Step 5: Solve for x
    x = 516,427,406.34/26,857.28
  6. Step 6: Final answer
    x = 19,228.58

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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.