Home / 20,723.80-31,080.04-5,727.32

Finding the Fourth Proportional to 20,723.80, 31,080.04 and 5,727.32

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Solution

The fourth proportional to 20,723.80, 31,080.04 and 5,727.32 is: 8,589.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.80 : 31,080.04 = 5,727.32 : x
  2. Step 2: Convert to fraction form
    20,723.80/31,080.04 = 5,727.32/x
  3. Step 3: Cross multiply
    20,723.80x = 31,080.04 × 5,727.32
  4. Step 4: Simplify right side
    20,723.80x = 178,005,334.69
  5. Step 5: Solve for x
    x = 178,005,334.69/20,723.80
  6. Step 6: Final answer
    x = 8,589.42

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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.