Home / 11,289.20-15,571.32-7,939.04

Finding the Fourth Proportional to 11,289.20, 15,571.32 and 7,939.04

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Solution

The fourth proportional to 11,289.20, 15,571.32 and 7,939.04 is: 10,950.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.20 : 15,571.32 = 7,939.04 : x
  2. Step 2: Convert to fraction form
    11,289.20/15,571.32 = 7,939.04/x
  3. Step 3: Cross multiply
    11,289.20x = 15,571.32 × 7,939.04
  4. Step 4: Simplify right side
    11,289.20x = 123,621,332.33
  5. Step 5: Solve for x
    x = 123,621,332.33/11,289.20
  6. Step 6: Final answer
    x = 10,950.41

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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.