Home / 28,990.28-39,993.13-20,050.31

Finding the Fourth Proportional to 28,990.28, 39,993.13 and 20,050.31

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Solution

The fourth proportional to 28,990.28, 39,993.13 and 20,050.31 is: 27,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.28 : 39,993.13 = 20,050.31 : x
  2. Step 2: Convert to fraction form
    28,990.28/39,993.13 = 20,050.31/x
  3. Step 3: Cross multiply
    28,990.28x = 39,993.13 × 20,050.31
  4. Step 4: Simplify right side
    28,990.28x = 801,874,654.37
  5. Step 5: Solve for x
    x = 801,874,654.37/28,990.28
  6. Step 6: Final answer
    x = 27,660.12

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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.