Home / 20,107.80-30,164.40-6,964.20

Finding the Fourth Proportional to 20,107.80, 30,164.40 and 6,964.20

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Solution

The fourth proportional to 20,107.80, 30,164.40 and 6,964.20 is: 10,447.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.80 : 30,164.40 = 6,964.20 : x
  2. Step 2: Convert to fraction form
    20,107.80/30,164.40 = 6,964.20/x
  3. Step 3: Cross multiply
    20,107.80x = 30,164.40 × 6,964.20
  4. Step 4: Simplify right side
    20,107.80x = 210,070,914.48
  5. Step 5: Solve for x
    x = 210,070,914.48/20,107.80
  6. Step 6: Final answer
    x = 10,447.24

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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.