Home / 21,035.96-31,566-8,553.68

Finding the Fourth Proportional to 21,035.96, 31,566 and 8,553.68

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Solution

The fourth proportional to 21,035.96, 31,566 and 8,553.68 is: 12,835.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.96 : 31,566 = 8,553.68 : x
  2. Step 2: Convert to fraction form
    21,035.96/31,566 = 8,553.68/x
  3. Step 3: Cross multiply
    21,035.96x = 31,566 × 8,553.68
  4. Step 4: Simplify right side
    21,035.96x = 270,005,462.88
  5. Step 5: Solve for x
    x = 270,005,462.88/21,035.96
  6. Step 6: Final answer
    x = 12,835.42

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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.