Home / 20,089.30-30,121.80-8,993.92

Finding the Fourth Proportional to 20,089.30, 30,121.80 and 8,993.92

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Solution

The fourth proportional to 20,089.30, 30,121.80 and 8,993.92 is: 13,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.30 : 30,121.80 = 8,993.92 : x
  2. Step 2: Convert to fraction form
    20,089.30/30,121.80 = 8,993.92/x
  3. Step 3: Cross multiply
    20,089.30x = 30,121.80 × 8,993.92
  4. Step 4: Simplify right side
    20,089.30x = 270,913,059.46
  5. Step 5: Solve for x
    x = 270,913,059.46/20,089.30
  6. Step 6: Final answer
    x = 13,485.44

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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.