Home / 15,450-21,320.94-8,376.42

Finding the Fourth Proportional to 15,450, 21,320.94 and 8,376.42

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Solution

The fourth proportional to 15,450, 21,320.94 and 8,376.42 is: 11,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450 : 21,320.94 = 8,376.42 : x
  2. Step 2: Convert to fraction form
    15,450/21,320.94 = 8,376.42/x
  3. Step 3: Cross multiply
    15,450x = 21,320.94 × 8,376.42
  4. Step 4: Simplify right side
    15,450x = 178,593,148.23
  5. Step 5: Solve for x
    x = 178,593,148.23/15,450
  6. Step 6: Final answer
    x = 11,559.43

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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.