Home / 14,150.40-21,175.20-12,321.60

Finding the Fourth Proportional to 14,150.40, 21,175.20 and 12,321.60

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Solution

The fourth proportional to 14,150.40, 21,175.20 and 12,321.60 is: 18,438.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,150.40 : 21,175.20 = 12,321.60 : x
  2. Step 2: Convert to fraction form
    14,150.40/21,175.20 = 12,321.60/x
  3. Step 3: Cross multiply
    14,150.40x = 21,175.20 × 12,321.60
  4. Step 4: Simplify right side
    14,150.40x = 260,912,344.32
  5. Step 5: Solve for x
    x = 260,912,344.32/14,150.40
  6. Step 6: Final answer
    x = 18,438.51

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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.