Home / 11,164.12-15,406.44-6,128.43

Finding the Fourth Proportional to 11,164.12, 15,406.44 and 6,128.43

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Solution

The fourth proportional to 11,164.12, 15,406.44 and 6,128.43 is: 8,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.12 : 15,406.44 = 6,128.43 : x
  2. Step 2: Convert to fraction form
    11,164.12/15,406.44 = 6,128.43/x
  3. Step 3: Cross multiply
    11,164.12x = 15,406.44 × 6,128.43
  4. Step 4: Simplify right side
    11,164.12x = 94,417,289.09
  5. Step 5: Solve for x
    x = 94,417,289.09/11,164.12
  6. Step 6: Final answer
    x = 8,457.21

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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.