Home / 28,969.62-39,964.68-20,029.56

Finding the Fourth Proportional to 28,969.62, 39,964.68 and 20,029.56

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Solution

The fourth proportional to 28,969.62, 39,964.68 and 20,029.56 is: 27,631.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.62 : 39,964.68 = 20,029.56 : x
  2. Step 2: Convert to fraction form
    28,969.62/39,964.68 = 20,029.56/x
  3. Step 3: Cross multiply
    28,969.62x = 39,964.68 × 20,029.56
  4. Step 4: Simplify right side
    28,969.62x = 800,474,955.94
  5. Step 5: Solve for x
    x = 800,474,955.94/28,969.62
  6. Step 6: Final answer
    x = 27,631.53

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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.