Home / 11,421.62-17,130.32-5,180.13

Finding the Fourth Proportional to 11,421.62, 17,130.32 and 5,180.13

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Solution

The fourth proportional to 11,421.62, 17,130.32 and 5,180.13 is: 7,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.62 : 17,130.32 = 5,180.13 : x
  2. Step 2: Convert to fraction form
    11,421.62/17,130.32 = 5,180.13/x
  3. Step 3: Cross multiply
    11,421.62x = 17,130.32 × 5,180.13
  4. Step 4: Simplify right side
    11,421.62x = 88,737,198.89
  5. Step 5: Solve for x
    x = 88,737,198.89/11,421.62
  6. Step 6: Final answer
    x = 7,769.23

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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.