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Finding the Fourth Proportional to 16,821.02, 23,213.07 and 9,369.02

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Solution

The fourth proportional to 16,821.02, 23,213.07 and 9,369.02 is: 12,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.02 : 23,213.07 = 9,369.02 : x
  2. Step 2: Convert to fraction form
    16,821.02/23,213.07 = 9,369.02/x
  3. Step 3: Cross multiply
    16,821.02x = 23,213.07 × 9,369.02
  4. Step 4: Simplify right side
    16,821.02x = 217,483,717.09
  5. Step 5: Solve for x
    x = 217,483,717.09/16,821.02
  6. Step 6: Final answer
    x = 12,929.28

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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.