Home / 11,999.34-17,998.88-5,420.93

Finding the Fourth Proportional to 11,999.34, 17,998.88 and 5,420.93

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Solution

The fourth proportional to 11,999.34, 17,998.88 and 5,420.93 is: 8,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.34 : 17,998.88 = 5,420.93 : x
  2. Step 2: Convert to fraction form
    11,999.34/17,998.88 = 5,420.93/x
  3. Step 3: Cross multiply
    11,999.34x = 17,998.88 × 5,420.93
  4. Step 4: Simplify right side
    11,999.34x = 97,570,551.46
  5. Step 5: Solve for x
    x = 97,570,551.46/11,999.34
  6. Step 6: Final answer
    x = 8,131.33

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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.