Home / 15,424.90-21,286.37-8,351.32

Finding the Fourth Proportional to 15,424.90, 21,286.37 and 8,351.32

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Solution

The fourth proportional to 15,424.90, 21,286.37 and 8,351.32 is: 11,524.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.90 : 21,286.37 = 8,351.32 : x
  2. Step 2: Convert to fraction form
    15,424.90/21,286.37 = 8,351.32/x
  3. Step 3: Cross multiply
    15,424.90x = 21,286.37 × 8,351.32
  4. Step 4: Simplify right side
    15,424.90x = 177,769,287.51
  5. Step 5: Solve for x
    x = 177,769,287.51/15,424.90
  6. Step 6: Final answer
    x = 11,524.83

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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.