Home / 20,923.25-31,384.47-6,131.84

Finding the Fourth Proportional to 20,923.25, 31,384.47 and 6,131.84

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Solution

The fourth proportional to 20,923.25, 31,384.47 and 6,131.84 is: 9,197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.25 : 31,384.47 = 6,131.84 : x
  2. Step 2: Convert to fraction form
    20,923.25/31,384.47 = 6,131.84/x
  3. Step 3: Cross multiply
    20,923.25x = 31,384.47 × 6,131.84
  4. Step 4: Simplify right side
    20,923.25x = 192,444,548.52
  5. Step 5: Solve for x
    x = 192,444,548.52/20,923.25
  6. Step 6: Final answer
    x = 9,197.64

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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.