Home / 14,120.38-21,166.50-7,078.90

Finding the Fourth Proportional to 14,120.38, 21,166.50 and 7,078.90

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Solution

The fourth proportional to 14,120.38, 21,166.50 and 7,078.90 is: 10,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.38 : 21,166.50 = 7,078.90 : x
  2. Step 2: Convert to fraction form
    14,120.38/21,166.50 = 7,078.90/x
  3. Step 3: Cross multiply
    14,120.38x = 21,166.50 × 7,078.90
  4. Step 4: Simplify right side
    14,120.38x = 149,835,536.85
  5. Step 5: Solve for x
    x = 149,835,536.85/14,120.38
  6. Step 6: Final answer
    x = 10,611.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.