Home / 21,664.86-29,898.12-12,234.84

Finding the Fourth Proportional to 21,664.86, 29,898.12 and 12,234.84

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Solution

The fourth proportional to 21,664.86, 29,898.12 and 12,234.84 is: 16,884.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.86 : 29,898.12 = 12,234.84 : x
  2. Step 2: Convert to fraction form
    21,664.86/29,898.12 = 12,234.84/x
  3. Step 3: Cross multiply
    21,664.86x = 29,898.12 × 12,234.84
  4. Step 4: Simplify right side
    21,664.86x = 365,798,714.50
  5. Step 5: Solve for x
    x = 365,798,714.50/21,664.86
  6. Step 6: Final answer
    x = 16,884.43

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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.