Home / 33,230.89-45,847.15-21,300.81

Finding the Fourth Proportional to 33,230.89, 45,847.15 and 21,300.81

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Solution

The fourth proportional to 33,230.89, 45,847.15 and 21,300.81 is: 29,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,230.89 : 45,847.15 = 21,300.81 : x
  2. Step 2: Convert to fraction form
    33,230.89/45,847.15 = 21,300.81/x
  3. Step 3: Cross multiply
    33,230.89x = 45,847.15 × 21,300.81
  4. Step 4: Simplify right side
    33,230.89x = 976,581,431.19
  5. Step 5: Solve for x
    x = 976,581,431.19/33,230.89
  6. Step 6: Final answer
    x = 29,387.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.