Home / 21,243.20-29,311.77-12,044.78

Finding the Fourth Proportional to 21,243.20, 29,311.77 and 12,044.78

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Solution

The fourth proportional to 21,243.20, 29,311.77 and 12,044.78 is: 16,619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.20 : 29,311.77 = 12,044.78 : x
  2. Step 2: Convert to fraction form
    21,243.20/29,311.77 = 12,044.78/x
  3. Step 3: Cross multiply
    21,243.20x = 29,311.77 × 12,044.78
  4. Step 4: Simplify right side
    21,243.20x = 353,053,674.50
  5. Step 5: Solve for x
    x = 353,053,674.50/21,243.20
  6. Step 6: Final answer
    x = 16,619.61

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1.5x scale

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.