Home / 20,990.03-31,490.79-6,198.93

Finding the Fourth Proportional to 20,990.03, 31,490.79 and 6,198.93

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Solution

The fourth proportional to 20,990.03, 31,490.79 and 6,198.93 is: 9,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.03 : 31,490.79 = 6,198.93 : x
  2. Step 2: Convert to fraction form
    20,990.03/31,490.79 = 6,198.93/x
  3. Step 3: Cross multiply
    20,990.03x = 31,490.79 × 6,198.93
  4. Step 4: Simplify right side
    20,990.03x = 195,209,179.61
  5. Step 5: Solve for x
    x = 195,209,179.61/20,990.03
  6. Step 6: Final answer
    x = 9,300.09

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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.