Home / 20,774.77-31,167.52-5,984.85

Finding the Fourth Proportional to 20,774.77, 31,167.52 and 5,984.85

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Solution

The fourth proportional to 20,774.77, 31,167.52 and 5,984.85 is: 8,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.77 : 31,167.52 = 5,984.85 : x
  2. Step 2: Convert to fraction form
    20,774.77/31,167.52 = 5,984.85/x
  3. Step 3: Cross multiply
    20,774.77x = 31,167.52 × 5,984.85
  4. Step 4: Simplify right side
    20,774.77x = 186,532,932.07
  5. Step 5: Solve for x
    x = 186,532,932.07/20,774.77
  6. Step 6: Final answer
    x = 8,978.82

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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.