Home / 12,281.21-18,418.61-3,514.07

Finding the Fourth Proportional to 12,281.21, 18,418.61 and 3,514.07

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Solution

The fourth proportional to 12,281.21, 18,418.61 and 3,514.07 is: 5,270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.21 : 18,418.61 = 3,514.07 : x
  2. Step 2: Convert to fraction form
    12,281.21/18,418.61 = 3,514.07/x
  3. Step 3: Cross multiply
    12,281.21x = 18,418.61 × 3,514.07
  4. Step 4: Simplify right side
    12,281.21x = 64,724,175.18
  5. Step 5: Solve for x
    x = 64,724,175.18/12,281.21
  6. Step 6: Final answer
    x = 5,270.18

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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.