Home / 11,291.76-16,914.96-5,430.96

Finding the Fourth Proportional to 11,291.76, 16,914.96 and 5,430.96

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Solution

The fourth proportional to 11,291.76, 16,914.96 and 5,430.96 is: 8,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.76 : 16,914.96 = 5,430.96 : x
  2. Step 2: Convert to fraction form
    11,291.76/16,914.96 = 5,430.96/x
  3. Step 3: Cross multiply
    11,291.76x = 16,914.96 × 5,430.96
  4. Step 4: Simplify right side
    11,291.76x = 91,864,471.16
  5. Step 5: Solve for x
    x = 91,864,471.16/11,291.76
  6. Step 6: Final answer
    x = 8,135.53

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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.