Home / 15,450.21-21,321.27-8,376.62

Finding the Fourth Proportional to 15,450.21, 21,321.27 and 8,376.62

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Solution

The fourth proportional to 15,450.21, 21,321.27 and 8,376.62 is: 11,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.21 : 21,321.27 = 8,376.62 : x
  2. Step 2: Convert to fraction form
    15,450.21/21,321.27 = 8,376.62/x
  3. Step 3: Cross multiply
    15,450.21x = 21,321.27 × 8,376.62
  4. Step 4: Simplify right side
    15,450.21x = 178,600,070.10
  5. Step 5: Solve for x
    x = 178,600,070.10/15,450.21
  6. Step 6: Final answer
    x = 11,559.72

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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.