Home / 11,191.48-15,439.62-7,212.04

Finding the Fourth Proportional to 11,191.48, 15,439.62 and 7,212.04

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Solution

The fourth proportional to 11,191.48, 15,439.62 and 7,212.04 is: 9,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.48 : 15,439.62 = 7,212.04 : x
  2. Step 2: Convert to fraction form
    11,191.48/15,439.62 = 7,212.04/x
  3. Step 3: Cross multiply
    11,191.48x = 15,439.62 × 7,212.04
  4. Step 4: Simplify right side
    11,191.48x = 111,351,157.02
  5. Step 5: Solve for x
    x = 111,351,157.02/11,191.48
  6. Step 6: Final answer
    x = 9,949.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.