Home / 11,157.76-15,400.48-6,441.36

Finding the Fourth Proportional to 11,157.76, 15,400.48 and 6,441.36

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Solution

The fourth proportional to 11,157.76, 15,400.48 and 6,441.36 is: 8,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.76 : 15,400.48 = 6,441.36 : x
  2. Step 2: Convert to fraction form
    11,157.76/15,400.48 = 6,441.36/x
  3. Step 3: Cross multiply
    11,157.76x = 15,400.48 × 6,441.36
  4. Step 4: Simplify right side
    11,157.76x = 99,200,035.85
  5. Step 5: Solve for x
    x = 99,200,035.85/11,157.76
  6. Step 6: Final answer
    x = 8,890.68

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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.