Home / 11,129.72-15,359.75-6,414.30

Finding the Fourth Proportional to 11,129.72, 15,359.75 and 6,414.30

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Solution

The fourth proportional to 11,129.72, 15,359.75 and 6,414.30 is: 8,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.72 : 15,359.75 = 6,414.30 : x
  2. Step 2: Convert to fraction form
    11,129.72/15,359.75 = 6,414.30/x
  3. Step 3: Cross multiply
    11,129.72x = 15,359.75 × 6,414.30
  4. Step 4: Simplify right side
    11,129.72x = 98,522,012.35
  5. Step 5: Solve for x
    x = 98,522,012.35/11,129.72
  6. Step 6: Final answer
    x = 8,852.16

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1.5x scale

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.