Home / 15,425.70-21,287.37-8,351.97

Finding the Fourth Proportional to 15,425.70, 21,287.37 and 8,351.97

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Solution

The fourth proportional to 15,425.70, 21,287.37 and 8,351.97 is: 11,525.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.70 : 21,287.37 = 8,351.97 : x
  2. Step 2: Convert to fraction form
    15,425.70/21,287.37 = 8,351.97/x
  3. Step 3: Cross multiply
    15,425.70x = 21,287.37 × 8,351.97
  4. Step 4: Simplify right side
    15,425.70x = 177,791,475.62
  5. Step 5: Solve for x
    x = 177,791,475.62/15,425.70
  6. Step 6: Final answer
    x = 11,525.67

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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.