Home / 15,425.16-21,286.72-8,351.56

Finding the Fourth Proportional to 15,425.16, 21,286.72 and 8,351.56

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Solution

The fourth proportional to 15,425.16, 21,286.72 and 8,351.56 is: 11,525.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.16 : 21,286.72 = 8,351.56 : x
  2. Step 2: Convert to fraction form
    15,425.16/21,286.72 = 8,351.56/x
  3. Step 3: Cross multiply
    15,425.16x = 21,286.72 × 8,351.56
  4. Step 4: Simplify right side
    15,425.16x = 177,777,319.28
  5. Step 5: Solve for x
    x = 177,777,319.28/15,425.16
  6. Step 6: Final answer
    x = 11,525.15

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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.