Home / 14,115.12-21,172.44-4,880.88

Finding the Fourth Proportional to 14,115.12, 21,172.44 and 4,880.88

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Solution

The fourth proportional to 14,115.12, 21,172.44 and 4,880.88 is: 7,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.12 : 21,172.44 = 4,880.88 : x
  2. Step 2: Convert to fraction form
    14,115.12/21,172.44 = 4,880.88/x
  3. Step 3: Cross multiply
    14,115.12x = 21,172.44 × 4,880.88
  4. Step 4: Simplify right side
    14,115.12x = 103,340,138.95
  5. Step 5: Solve for x
    x = 103,340,138.95/14,115.12
  6. Step 6: Final answer
    x = 7,321.24

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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.