Home / 11,458.13-17,186.18-3,139.02

Finding the Fourth Proportional to 11,458.13, 17,186.18 and 3,139.02

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Solution

The fourth proportional to 11,458.13, 17,186.18 and 3,139.02 is: 4,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458.13 : 17,186.18 = 3,139.02 : x
  2. Step 2: Convert to fraction form
    11,458.13/17,186.18 = 3,139.02/x
  3. Step 3: Cross multiply
    11,458.13x = 17,186.18 × 3,139.02
  4. Step 4: Simplify right side
    11,458.13x = 53,947,747.05
  5. Step 5: Solve for x
    x = 53,947,747.05/11,458.13
  6. Step 6: Final answer
    x = 4,708.25

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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.