Home / 11,129.80-15,359.70-6,414.52

Finding the Fourth Proportional to 11,129.80, 15,359.70 and 6,414.52

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Solution

The fourth proportional to 11,129.80, 15,359.70 and 6,414.52 is: 8,852.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.80 : 15,359.70 = 6,414.52 : x
  2. Step 2: Convert to fraction form
    11,129.80/15,359.70 = 6,414.52/x
  3. Step 3: Cross multiply
    11,129.80x = 15,359.70 × 6,414.52
  4. Step 4: Simplify right side
    11,129.80x = 98,525,102.84
  5. Step 5: Solve for x
    x = 98,525,102.84/11,129.80
  6. Step 6: Final answer
    x = 8,852.37

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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.