Home / 12,284.20-18,426.46-3,519.40

Finding the Fourth Proportional to 12,284.20, 18,426.46 and 3,519.40

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Solution

The fourth proportional to 12,284.20, 18,426.46 and 3,519.40 is: 5,279.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,284.20 : 18,426.46 = 3,519.40 : x
  2. Step 2: Convert to fraction form
    12,284.20/18,426.46 = 3,519.40/x
  3. Step 3: Cross multiply
    12,284.20x = 18,426.46 × 3,519.40
  4. Step 4: Simplify right side
    12,284.20x = 64,850,083.32
  5. Step 5: Solve for x
    x = 64,850,083.32/12,284.20
  6. Step 6: Final answer
    x = 5,279.15

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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.