Home / 11,999.58-17,989.65-5,422.38

Finding the Fourth Proportional to 11,999.58, 17,989.65 and 5,422.38

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Solution

The fourth proportional to 11,999.58, 17,989.65 and 5,422.38 is: 8,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.58 : 17,989.65 = 5,422.38 : x
  2. Step 2: Convert to fraction form
    11,999.58/17,989.65 = 5,422.38/x
  3. Step 3: Cross multiply
    11,999.58x = 17,989.65 × 5,422.38
  4. Step 4: Simplify right side
    11,999.58x = 97,546,718.37
  5. Step 5: Solve for x
    x = 97,546,718.37/11,999.58
  6. Step 6: Final answer
    x = 8,129.18

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1.5x scale

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.