Home / 15,450.42-21,321.72-8,376.86

Finding the Fourth Proportional to 15,450.42, 21,321.72 and 8,376.86

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Solution

The fourth proportional to 15,450.42, 21,321.72 and 8,376.86 is: 11,560.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.42 : 21,321.72 = 8,376.86 : x
  2. Step 2: Convert to fraction form
    15,450.42/21,321.72 = 8,376.86/x
  3. Step 3: Cross multiply
    15,450.42x = 21,321.72 × 8,376.86
  4. Step 4: Simplify right side
    15,450.42x = 178,609,063.40
  5. Step 5: Solve for x
    x = 178,609,063.40/15,450.42
  6. Step 6: Final answer
    x = 11,560.14

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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.