Home / 14,107.80-21,170.70-6,720.60

Finding the Fourth Proportional to 14,107.80, 21,170.70 and 6,720.60

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Solution

The fourth proportional to 14,107.80, 21,170.70 and 6,720.60 is: 10,085.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,107.80 : 21,170.70 = 6,720.60 : x
  2. Step 2: Convert to fraction form
    14,107.80/21,170.70 = 6,720.60/x
  3. Step 3: Cross multiply
    14,107.80x = 21,170.70 × 6,720.60
  4. Step 4: Simplify right side
    14,107.80x = 142,279,806.42
  5. Step 5: Solve for x
    x = 142,279,806.42/14,107.80
  6. Step 6: Final answer
    x = 10,085.19

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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.