Home / 10,083.96-15,128.24-3,420.36

Finding the Fourth Proportional to 10,083.96, 15,128.24 and 3,420.36

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Solution

The fourth proportional to 10,083.96, 15,128.24 and 3,420.36 is: 5,131.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,083.96 : 15,128.24 = 3,420.36 : x
  2. Step 2: Convert to fraction form
    10,083.96/15,128.24 = 3,420.36/x
  3. Step 3: Cross multiply
    10,083.96x = 15,128.24 × 3,420.36
  4. Step 4: Simplify right side
    10,083.96x = 51,744,009.86
  5. Step 5: Solve for x
    x = 51,744,009.86/10,083.96
  6. Step 6: Final answer
    x = 5,131.32

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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.