Home / 20,784.80-31,173.46-5,990.09

Finding the Fourth Proportional to 20,784.80, 31,173.46 and 5,990.09

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Solution

The fourth proportional to 20,784.80, 31,173.46 and 5,990.09 is: 8,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.80 : 31,173.46 = 5,990.09 : x
  2. Step 2: Convert to fraction form
    20,784.80/31,173.46 = 5,990.09/x
  3. Step 3: Cross multiply
    20,784.80x = 31,173.46 × 5,990.09
  4. Step 4: Simplify right side
    20,784.80x = 186,731,660.17
  5. Step 5: Solve for x
    x = 186,731,660.17/20,784.80
  6. Step 6: Final answer
    x = 8,984.05

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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.