Home / 20,209.27-30,299.80-8,958.51

Finding the Fourth Proportional to 20,209.27, 30,299.80 and 8,958.51

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Solution

The fourth proportional to 20,209.27, 30,299.80 and 8,958.51 is: 13,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.27 : 30,299.80 = 8,958.51 : x
  2. Step 2: Convert to fraction form
    20,209.27/30,299.80 = 8,958.51/x
  3. Step 3: Cross multiply
    20,209.27x = 30,299.80 × 8,958.51
  4. Step 4: Simplify right side
    20,209.27x = 271,441,061.30
  5. Step 5: Solve for x
    x = 271,441,061.30/20,209.27
  6. Step 6: Final answer
    x = 13,431.51

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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.