Home / 15,429.14-21,292.22-8,355.54

Finding the Fourth Proportional to 15,429.14, 21,292.22 and 8,355.54

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Solution

The fourth proportional to 15,429.14, 21,292.22 and 8,355.54 is: 11,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.14 : 21,292.22 = 8,355.54 : x
  2. Step 2: Convert to fraction form
    15,429.14/21,292.22 = 8,355.54/x
  3. Step 3: Cross multiply
    15,429.14x = 21,292.22 × 8,355.54
  4. Step 4: Simplify right side
    15,429.14x = 177,907,954.12
  5. Step 5: Solve for x
    x = 177,907,954.12/15,429.14
  6. Step 6: Final answer
    x = 11,530.65

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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.