Home / 14,080.40-21,107.40-5,321.20

Finding the Fourth Proportional to 14,080.40, 21,107.40 and 5,321.20

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Solution

The fourth proportional to 14,080.40, 21,107.40 and 5,321.20 is: 7,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.40 : 21,107.40 = 5,321.20 : x
  2. Step 2: Convert to fraction form
    14,080.40/21,107.40 = 5,321.20/x
  3. Step 3: Cross multiply
    14,080.40x = 21,107.40 × 5,321.20
  4. Step 4: Simplify right side
    14,080.40x = 112,316,696.88
  5. Step 5: Solve for x
    x = 112,316,696.88/14,080.40
  6. Step 6: Final answer
    x = 7,976.81

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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.