Home / 15,450.19-21,321.25-8,376.55

Finding the Fourth Proportional to 15,450.19, 21,321.25 and 8,376.55

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Solution

The fourth proportional to 15,450.19, 21,321.25 and 8,376.55 is: 11,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.19 : 21,321.25 = 8,376.55 : x
  2. Step 2: Convert to fraction form
    15,450.19/21,321.25 = 8,376.55/x
  3. Step 3: Cross multiply
    15,450.19x = 21,321.25 × 8,376.55
  4. Step 4: Simplify right side
    15,450.19x = 178,598,516.69
  5. Step 5: Solve for x
    x = 178,598,516.69/15,450.19
  6. Step 6: Final answer
    x = 11,559.63

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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.