Home / 30,157.82-45,251.45-21,329.87

Finding the Fourth Proportional to 30,157.82, 45,251.45 and 21,329.87

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Solution

The fourth proportional to 30,157.82, 45,251.45 and 21,329.87 is: 32,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.82 : 45,251.45 = 21,329.87 : x
  2. Step 2: Convert to fraction form
    30,157.82/45,251.45 = 21,329.87/x
  3. Step 3: Cross multiply
    30,157.82x = 45,251.45 × 21,329.87
  4. Step 4: Simplify right side
    30,157.82x = 965,207,212.90
  5. Step 5: Solve for x
    x = 965,207,212.90/30,157.82
  6. Step 6: Final answer
    x = 32,005.21

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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.