Home / 20,784.66-31,178.43-5,992.98

Finding the Fourth Proportional to 20,784.66, 31,178.43 and 5,992.98

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Solution

The fourth proportional to 20,784.66, 31,178.43 and 5,992.98 is: 8,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.66 : 31,178.43 = 5,992.98 : x
  2. Step 2: Convert to fraction form
    20,784.66/31,178.43 = 5,992.98/x
  3. Step 3: Cross multiply
    20,784.66x = 31,178.43 × 5,992.98
  4. Step 4: Simplify right side
    20,784.66x = 186,851,707.42
  5. Step 5: Solve for x
    x = 186,851,707.42/20,784.66
  6. Step 6: Final answer
    x = 8,989.89

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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.