Home / 12,310.28-18,463.88-3,426.28

Finding the Fourth Proportional to 12,310.28, 18,463.88 and 3,426.28

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Solution

The fourth proportional to 12,310.28, 18,463.88 and 3,426.28 is: 5,138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.28 : 18,463.88 = 3,426.28 : x
  2. Step 2: Convert to fraction form
    12,310.28/18,463.88 = 3,426.28/x
  3. Step 3: Cross multiply
    12,310.28x = 18,463.88 × 3,426.28
  4. Step 4: Simplify right side
    12,310.28x = 63,262,431.33
  5. Step 5: Solve for x
    x = 63,262,431.33/12,310.28
  6. Step 6: Final answer
    x = 5,138.99

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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.