Home / 15,424.77-21,286.19-8,351.19

Finding the Fourth Proportional to 15,424.77, 21,286.19 and 8,351.19

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Solution

The fourth proportional to 15,424.77, 21,286.19 and 8,351.19 is: 11,524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.77 : 21,286.19 = 8,351.19 : x
  2. Step 2: Convert to fraction form
    15,424.77/21,286.19 = 8,351.19/x
  3. Step 3: Cross multiply
    15,424.77x = 21,286.19 × 8,351.19
  4. Step 4: Simplify right side
    15,424.77x = 177,765,017.07
  5. Step 5: Solve for x
    x = 177,765,017.07/15,424.77
  6. Step 6: Final answer
    x = 11,524.65

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Double scale
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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.