Home / 11,431.86-17,139.66-4,405.92

Finding the Fourth Proportional to 11,431.86, 17,139.66 and 4,405.92

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Solution

The fourth proportional to 11,431.86, 17,139.66 and 4,405.92 is: 6,605.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.86 : 17,139.66 = 4,405.92 : x
  2. Step 2: Convert to fraction form
    11,431.86/17,139.66 = 4,405.92/x
  3. Step 3: Cross multiply
    11,431.86x = 17,139.66 × 4,405.92
  4. Step 4: Simplify right side
    11,431.86x = 75,515,970.79
  5. Step 5: Solve for x
    x = 75,515,970.79/11,431.86
  6. Step 6: Final answer
    x = 6,605.75

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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.