Home / 11,221.66-16,832.49-3,430.40

Finding the Fourth Proportional to 11,221.66, 16,832.49 and 3,430.40

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Solution

The fourth proportional to 11,221.66, 16,832.49 and 3,430.40 is: 5,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.66 : 16,832.49 = 3,430.40 : x
  2. Step 2: Convert to fraction form
    11,221.66/16,832.49 = 3,430.40/x
  3. Step 3: Cross multiply
    11,221.66x = 16,832.49 × 3,430.40
  4. Step 4: Simplify right side
    11,221.66x = 57,742,215.78
  5. Step 5: Solve for x
    x = 57,742,215.78/11,221.66
  6. Step 6: Final answer
    x = 5,145.60

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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.