Home / 11,128.02-15,351.46-6,409.56

Finding the Fourth Proportional to 11,128.02, 15,351.46 and 6,409.56

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Solution

The fourth proportional to 11,128.02, 15,351.46 and 6,409.56 is: 8,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.02 : 15,351.46 = 6,409.56 : x
  2. Step 2: Convert to fraction form
    11,128.02/15,351.46 = 6,409.56/x
  3. Step 3: Cross multiply
    11,128.02x = 15,351.46 × 6,409.56
  4. Step 4: Simplify right side
    11,128.02x = 98,396,103.96
  5. Step 5: Solve for x
    x = 98,396,103.96/11,128.02
  6. Step 6: Final answer
    x = 8,842.19

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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.