Home / 20,331.69-30,297.99-19,662.84

Finding the Fourth Proportional to 20,331.69, 30,297.99 and 19,662.84

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Solution

The fourth proportional to 20,331.69, 30,297.99 and 19,662.84 is: 29,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.69 : 30,297.99 = 19,662.84 : x
  2. Step 2: Convert to fraction form
    20,331.69/30,297.99 = 19,662.84/x
  3. Step 3: Cross multiply
    20,331.69x = 30,297.99 × 19,662.84
  4. Step 4: Simplify right side
    20,331.69x = 595,744,529.69
  5. Step 5: Solve for x
    x = 595,744,529.69/20,331.69
  6. Step 6: Final answer
    x = 29,301.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.