Home / 20,923.04-31,380.88-6,131.60

Finding the Fourth Proportional to 20,923.04, 31,380.88 and 6,131.60

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Solution

The fourth proportional to 20,923.04, 31,380.88 and 6,131.60 is: 9,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.04 : 31,380.88 = 6,131.60 : x
  2. Step 2: Convert to fraction form
    20,923.04/31,380.88 = 6,131.60/x
  3. Step 3: Cross multiply
    20,923.04x = 31,380.88 × 6,131.60
  4. Step 4: Simplify right side
    20,923.04x = 192,415,003.81
  5. Step 5: Solve for x
    x = 192,415,003.81/20,923.04
  6. Step 6: Final answer
    x = 9,196.32

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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.