Home / 12,405.05-17,119.17-6,739.91

Finding the Fourth Proportional to 12,405.05, 17,119.17 and 6,739.91

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Solution

The fourth proportional to 12,405.05, 17,119.17 and 6,739.91 is: 9,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.05 : 17,119.17 = 6,739.91 : x
  2. Step 2: Convert to fraction form
    12,405.05/17,119.17 = 6,739.91/x
  3. Step 3: Cross multiply
    12,405.05x = 17,119.17 × 6,739.91
  4. Step 4: Simplify right side
    12,405.05x = 115,381,631.38
  5. Step 5: Solve for x
    x = 115,381,631.38/12,405.05
  6. Step 6: Final answer
    x = 9,301.18

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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.