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Finding the Fourth Proportional to 12,353, 17,047.20 and 6,764

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Solution

The fourth proportional to 12,353, 17,047.20 and 6,764 is: 9,334.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353 : 17,047.20 = 6,764 : x
  2. Step 2: Convert to fraction form
    12,353/17,047.20 = 6,764/x
  3. Step 3: Cross multiply
    12,353x = 17,047.20 × 6,764
  4. Step 4: Simplify right side
    12,353x = 115,307,260.80
  5. Step 5: Solve for x
    x = 115,307,260.80/12,353
  6. Step 6: Final answer
    x = 9,334.35

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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.