Home / 11,223.72-15,489.99-8,424.36

Finding the Fourth Proportional to 11,223.72, 15,489.99 and 8,424.36

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Solution

The fourth proportional to 11,223.72, 15,489.99 and 8,424.36 is: 11,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.72 : 15,489.99 = 8,424.36 : x
  2. Step 2: Convert to fraction form
    11,223.72/15,489.99 = 8,424.36/x
  3. Step 3: Cross multiply
    11,223.72x = 15,489.99 × 8,424.36
  4. Step 4: Simplify right side
    11,223.72x = 130,493,252.16
  5. Step 5: Solve for x
    x = 130,493,252.16/11,223.72
  6. Step 6: Final answer
    x = 11,626.56

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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.