Home / 11,445.75-17,132.67-7,290.45

Finding the Fourth Proportional to 11,445.75, 17,132.67 and 7,290.45

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Solution

The fourth proportional to 11,445.75, 17,132.67 and 7,290.45 is: 10,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,445.75 : 17,132.67 = 7,290.45 : x
  2. Step 2: Convert to fraction form
    11,445.75/17,132.67 = 7,290.45/x
  3. Step 3: Cross multiply
    11,445.75x = 17,132.67 × 7,290.45
  4. Step 4: Simplify right side
    11,445.75x = 124,904,874.00
  5. Step 5: Solve for x
    x = 124,904,874.00/11,445.75
  6. Step 6: Final answer
    x = 10,912.77

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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.