Home / 11,221.31-15,479.61-6,743.40

Finding the Fourth Proportional to 11,221.31, 15,479.61 and 6,743.40

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Solution

The fourth proportional to 11,221.31, 15,479.61 and 6,743.40 is: 9,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.31 : 15,479.61 = 6,743.40 : x
  2. Step 2: Convert to fraction form
    11,221.31/15,479.61 = 6,743.40/x
  3. Step 3: Cross multiply
    11,221.31x = 15,479.61 × 6,743.40
  4. Step 4: Simplify right side
    11,221.31x = 104,385,202.07
  5. Step 5: Solve for x
    x = 104,385,202.07/11,221.31
  6. Step 6: Final answer
    x = 9,302.41

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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.