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Finding the Fourth Proportional to 16,345, 22,558.02 and 9,721

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Solution

The fourth proportional to 16,345, 22,558.02 and 9,721 is: 13,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,345 : 22,558.02 = 9,721 : x
  2. Step 2: Convert to fraction form
    16,345/22,558.02 = 9,721/x
  3. Step 3: Cross multiply
    16,345x = 22,558.02 × 9,721
  4. Step 4: Simplify right side
    16,345x = 219,286,512.42
  5. Step 5: Solve for x
    x = 219,286,512.42/16,345
  6. Step 6: Final answer
    x = 13,416.12

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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.