Home / 12,409.20-17,120.84-7,103.03

Finding the Fourth Proportional to 12,409.20, 17,120.84 and 7,103.03

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Solution

The fourth proportional to 12,409.20, 17,120.84 and 7,103.03 is: 9,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.20 : 17,120.84 = 7,103.03 : x
  2. Step 2: Convert to fraction form
    12,409.20/17,120.84 = 7,103.03/x
  3. Step 3: Cross multiply
    12,409.20x = 17,120.84 × 7,103.03
  4. Step 4: Simplify right side
    12,409.20x = 121,609,719.03
  5. Step 5: Solve for x
    x = 121,609,719.03/12,409.20
  6. Step 6: Final answer
    x = 9,799.96

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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.