Home / 11,439.50-15,783.66-7,191.27

Finding the Fourth Proportional to 11,439.50, 15,783.66 and 7,191.27

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Solution

The fourth proportional to 11,439.50, 15,783.66 and 7,191.27 is: 9,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.50 : 15,783.66 = 7,191.27 : x
  2. Step 2: Convert to fraction form
    11,439.50/15,783.66 = 7,191.27/x
  3. Step 3: Cross multiply
    11,439.50x = 15,783.66 × 7,191.27
  4. Step 4: Simplify right side
    11,439.50x = 113,504,560.65
  5. Step 5: Solve for x
    x = 113,504,560.65/11,439.50
  6. Step 6: Final answer
    x = 9,922.17

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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.