Home / 15,450-21,321.12-9,167.76

Finding the Fourth Proportional to 15,450, 21,321.12 and 9,167.76

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Solution

The fourth proportional to 15,450, 21,321.12 and 9,167.76 is: 12,651.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450 : 21,321.12 = 9,167.76 : x
  2. Step 2: Convert to fraction form
    15,450/21,321.12 = 9,167.76/x
  3. Step 3: Cross multiply
    15,450x = 21,321.12 × 9,167.76
  4. Step 4: Simplify right side
    15,450x = 195,466,911.09
  5. Step 5: Solve for x
    x = 195,466,911.09/15,450
  6. Step 6: Final answer
    x = 12,651.58

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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.