Home / 30,213.82-45,320.74-11,489.53

Finding the Fourth Proportional to 30,213.82, 45,320.74 and 11,489.53

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Solution

The fourth proportional to 30,213.82, 45,320.74 and 11,489.53 is: 17,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.82 : 45,320.74 = 11,489.53 : x
  2. Step 2: Convert to fraction form
    30,213.82/45,320.74 = 11,489.53/x
  3. Step 3: Cross multiply
    30,213.82x = 45,320.74 × 11,489.53
  4. Step 4: Simplify right side
    30,213.82x = 520,714,001.85
  5. Step 5: Solve for x
    x = 520,714,001.85/30,213.82
  6. Step 6: Final answer
    x = 17,234.30

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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.