Home / 11,999.07-17,998.44-5,420.66

Finding the Fourth Proportional to 11,999.07, 17,998.44 and 5,420.66

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Solution

The fourth proportional to 11,999.07, 17,998.44 and 5,420.66 is: 8,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.07 : 17,998.44 = 5,420.66 : x
  2. Step 2: Convert to fraction form
    11,999.07/17,998.44 = 5,420.66/x
  3. Step 3: Cross multiply
    11,999.07x = 17,998.44 × 5,420.66
  4. Step 4: Simplify right side
    11,999.07x = 97,563,313.45
  5. Step 5: Solve for x
    x = 97,563,313.45/11,999.07
  6. Step 6: Final answer
    x = 8,130.91

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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.