Home / 20,835.88-31,266.58-8,354.58

Finding the Fourth Proportional to 20,835.88, 31,266.58 and 8,354.58

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Solution

The fourth proportional to 20,835.88, 31,266.58 and 8,354.58 is: 12,536.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.88 : 31,266.58 = 8,354.58 : x
  2. Step 2: Convert to fraction form
    20,835.88/31,266.58 = 8,354.58/x
  3. Step 3: Cross multiply
    20,835.88x = 31,266.58 × 8,354.58
  4. Step 4: Simplify right side
    20,835.88x = 261,219,143.94
  5. Step 5: Solve for x
    x = 261,219,143.94/20,835.88
  6. Step 6: Final answer
    x = 12,536.99

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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.