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Finding the Fourth Proportional to 21,604.64, 29,814.23 and 12,044.42

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Solution

The fourth proportional to 21,604.64, 29,814.23 and 12,044.42 is: 16,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.64 : 29,814.23 = 12,044.42 : x
  2. Step 2: Convert to fraction form
    21,604.64/29,814.23 = 12,044.42/x
  3. Step 3: Cross multiply
    21,604.64x = 29,814.23 × 12,044.42
  4. Step 4: Simplify right side
    21,604.64x = 359,094,898.80
  5. Step 5: Solve for x
    x = 359,094,898.80/21,604.64
  6. Step 6: Final answer
    x = 16,621.19

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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.