Home / 14,080.80-21,121.20-13,011.60

Finding the Fourth Proportional to 14,080.80, 21,121.20 and 13,011.60

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Solution

The fourth proportional to 14,080.80, 21,121.20 and 13,011.60 is: 19,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.80 : 21,121.20 = 13,011.60 : x
  2. Step 2: Convert to fraction form
    14,080.80/21,121.20 = 13,011.60/x
  3. Step 3: Cross multiply
    14,080.80x = 21,121.20 × 13,011.60
  4. Step 4: Simplify right side
    14,080.80x = 274,820,605.92
  5. Step 5: Solve for x
    x = 274,820,605.92/14,080.80
  6. Step 6: Final answer
    x = 19,517.40

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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.