Home / 30,289.82-45,475.70-20,906.51

Finding the Fourth Proportional to 30,289.82, 45,475.70 and 20,906.51

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Solution

The fourth proportional to 30,289.82, 45,475.70 and 20,906.51 is: 31,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,289.82 : 45,475.70 = 20,906.51 : x
  2. Step 2: Convert to fraction form
    30,289.82/45,475.70 = 20,906.51/x
  3. Step 3: Cross multiply
    30,289.82x = 45,475.70 × 20,906.51
  4. Step 4: Simplify right side
    30,289.82x = 950,737,844.90
  5. Step 5: Solve for x
    x = 950,737,844.90/30,289.82
  6. Step 6: Final answer
    x = 31,388.04

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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.