Home / 10,425.45-15,638.38-3,405.48

Finding the Fourth Proportional to 10,425.45, 15,638.38 and 3,405.48

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Solution

The fourth proportional to 10,425.45, 15,638.38 and 3,405.48 is: 5,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,425.45 : 15,638.38 = 3,405.48 : x
  2. Step 2: Convert to fraction form
    10,425.45/15,638.38 = 3,405.48/x
  3. Step 3: Cross multiply
    10,425.45x = 15,638.38 × 3,405.48
  4. Step 4: Simplify right side
    10,425.45x = 53,256,240.45
  5. Step 5: Solve for x
    x = 53,256,240.45/10,425.45
  6. Step 6: Final answer
    x = 5,108.29

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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.