Home / 12,405.62-17,119.69-6,740.33

Finding the Fourth Proportional to 12,405.62, 17,119.69 and 6,740.33

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Solution

The fourth proportional to 12,405.62, 17,119.69 and 6,740.33 is: 9,301.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.62 : 17,119.69 = 6,740.33 : x
  2. Step 2: Convert to fraction form
    12,405.62/17,119.69 = 6,740.33/x
  3. Step 3: Cross multiply
    12,405.62x = 17,119.69 × 6,740.33
  4. Step 4: Simplify right side
    12,405.62x = 115,392,353.95
  5. Step 5: Solve for x
    x = 115,392,353.95/12,405.62
  6. Step 6: Final answer
    x = 9,301.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.