Home / 20,213.40-30,309.30-7,066.20

Finding the Fourth Proportional to 20,213.40, 30,309.30 and 7,066.20

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Solution

The fourth proportional to 20,213.40, 30,309.30 and 7,066.20 is: 10,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.40 : 30,309.30 = 7,066.20 : x
  2. Step 2: Convert to fraction form
    20,213.40/30,309.30 = 7,066.20/x
  3. Step 3: Cross multiply
    20,213.40x = 30,309.30 × 7,066.20
  4. Step 4: Simplify right side
    20,213.40x = 214,171,575.66
  5. Step 5: Solve for x
    x = 214,171,575.66/20,213.40
  6. Step 6: Final answer
    x = 10,595.52

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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.