Home / 21,222.93-29,289.63-12,269.90

Finding the Fourth Proportional to 21,222.93, 29,289.63 and 12,269.90

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Solution

The fourth proportional to 21,222.93, 29,289.63 and 12,269.90 is: 16,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.93 : 29,289.63 = 12,269.90 : x
  2. Step 2: Convert to fraction form
    21,222.93/29,289.63 = 12,269.90/x
  3. Step 3: Cross multiply
    21,222.93x = 29,289.63 × 12,269.90
  4. Step 4: Simplify right side
    21,222.93x = 359,380,950.37
  5. Step 5: Solve for x
    x = 359,380,950.37/21,222.93
  6. Step 6: Final answer
    x = 16,933.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.