Home / 11,409.86-17,118.20-4,390.49

Finding the Fourth Proportional to 11,409.86, 17,118.20 and 4,390.49

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Solution

The fourth proportional to 11,409.86, 17,118.20 and 4,390.49 is: 6,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.86 : 17,118.20 = 4,390.49 : x
  2. Step 2: Convert to fraction form
    11,409.86/17,118.20 = 4,390.49/x
  3. Step 3: Cross multiply
    11,409.86x = 17,118.20 × 4,390.49
  4. Step 4: Simplify right side
    11,409.86x = 75,157,306.76
  5. Step 5: Solve for x
    x = 75,157,306.76/11,409.86
  6. Step 6: Final answer
    x = 6,587.05

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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.