Home / 12,412.34-18,618.49-5,391.46

Finding the Fourth Proportional to 12,412.34, 18,618.49 and 5,391.46

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Solution

The fourth proportional to 12,412.34, 18,618.49 and 5,391.46 is: 8,087.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.34 : 18,618.49 = 5,391.46 : x
  2. Step 2: Convert to fraction form
    12,412.34/18,618.49 = 5,391.46/x
  3. Step 3: Cross multiply
    12,412.34x = 18,618.49 × 5,391.46
  4. Step 4: Simplify right side
    12,412.34x = 100,380,874.11
  5. Step 5: Solve for x
    x = 100,380,874.11/12,412.34
  6. Step 6: Final answer
    x = 8,087.18

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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.