Home / 30,330.44-45,501.82-12,800.20

Finding the Fourth Proportional to 30,330.44, 45,501.82 and 12,800.20

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Solution

The fourth proportional to 30,330.44, 45,501.82 and 12,800.20 is: 19,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.44 : 45,501.82 = 12,800.20 : x
  2. Step 2: Convert to fraction form
    30,330.44/45,501.82 = 12,800.20/x
  3. Step 3: Cross multiply
    30,330.44x = 45,501.82 × 12,800.20
  4. Step 4: Simplify right side
    30,330.44x = 582,432,396.36
  5. Step 5: Solve for x
    x = 582,432,396.36/30,330.44
  6. Step 6: Final answer
    x = 19,202.90

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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.