Home / 11,221.63-16,832.49-3,430.42

Finding the Fourth Proportional to 11,221.63, 16,832.49 and 3,430.42

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Solution

The fourth proportional to 11,221.63, 16,832.49 and 3,430.42 is: 5,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.63 : 16,832.49 = 3,430.42 : x
  2. Step 2: Convert to fraction form
    11,221.63/16,832.49 = 3,430.42/x
  3. Step 3: Cross multiply
    11,221.63x = 16,832.49 × 3,430.42
  4. Step 4: Simplify right side
    11,221.63x = 57,742,510.35
  5. Step 5: Solve for x
    x = 57,742,510.35/11,221.63
  6. Step 6: Final answer
    x = 5,145.64

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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.